Answer:
Option D
Explanation:
Postpartum depression is majorly experienced in woman who has recently entered into motherhood. This form of depression arises because of the complications involved in a child birth. It is strongly driven by sudden changes that come up in the life of a woman after becoming mother such as – loss of job, responsibility of child, tight life schedule etc. some common symptoms of this problem include – mood swing, anxiety, sleeplessness, crying etc.
Hence, option D is correct
Which is NOT a vector that carries and transmits pathogens to humans and other animals?
Answer:
Some virus or bacteria that is transmited without a carriage, as a sexual transmited disease
Explanation:
Usually vectors are animals, and mainly arthropods (mosquitoes, ticks, beetles, fleas, etc).
There are 5 ways to transmit a disease
Oral: by eating it, vector: some arthropods carry the disease and passed it out, fomites: something like a knife has a pathogen and when you cut yourself you get infected, aerosol: is in the air, zoonotic: as an example if a rat bites you and you get infected with rabia, direct contact: as an example when someone pass HIV to other person through sexual contact
Which of the following best describes mollusks? a) They are bilaterally symmetrical and have a soft body sometimes covered with a shell. b) They are bilaterally symmetrical and have a soft body always covered with a shell. c) They have radial body symmetry and a soft body sometimes covered with a shell.
Answer:
They are bilaterally symmetrical and have a soft body sometimes covered with a shell.
Explanation:
Mollusks are bilaterally symmetrical organisms which means only two planes can divide their bodies into two identical halves. They are triploblastic organisms with organ system level of body organization. Mollusks have a soft body that is usually covered by a dorsal shell composed mainly of calcium carbonate. The foot is a broad, flat and muscular structure located ventrally. Foot serves these organisms in locomotion. The various body organs are present as visceral mass located above the foot. The visceral mass is covered by a thin sheet of tissue called mantle. Example: clams, snails, and squids.
The following that best describes mollusks is :
b) They are bilaterally symmetrical and have a soft body sometimes covered with a shell.
"Characteristics of Mollusk"The following that best describes mollusks is that they are bilaterally symmetrical and have a soft body sometimes covered with a shell.
A mollusk is any of a wide phylum of invertebrates (such as snails, clams, or squids) with a soft, unsegmented body contained in a calcareous shell.
Malacology is the study of Mollusks.
They are slow-moving invertebrates with a thin fleshy membrane or mantle that covers the internal organs.
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The __________ is involved in encoding and transferring new explicit memories to long-term memory.A. cerebellum
B. amygdala
C. hippocampus
D. prefrontal cortex
Answer:C. hippocampus
Explanation:the hippocampus is located within the medial temporal lobe of the brain.it is involved Involved in forming long term memories.
It is also involved in spatial navigation,that involves navigating around familiar paths.
It is involved in forming memories that can be reflected on and discussed about.
A damage to the hippocampus can cause inability to form long term memories.
PLEASE PLEASE HURRY NEED IT NOW WILL GIVE BRAINLEST AND 63 POINTS
1. List the 4 weather fronts and give a brief description of each. (6.03, 6.07)
2. Define orographic uplift. (6.06)
3. Climate vs. weather? (6.01)
4. What are some terms used for each of the following (6.07):
• Hurricane -(ex: eye)
• Tornado-
• Blizzard-
• Thunderstorm-
5. Altocumulus and altostratus clouds normally bring what type of weather? Describe what each type looks like. (6.06)
6. What does a radiosonde measure? (6.02)
7. Doppler radar is used for? (6.02)
Did you ever find the answer for question 4?
If a male genotype is Tt and the female genotype is TT, then what are the phenotypic ratios for tall and short corn?Phenotype :a. short b. all tallc. tall d. all short
Answer:
The correct answer is b. all tall
Explanation:
If the genotype of one parent for height is Tt and another parent is TT then after the fusion of gamete all the offspring will show tall phenotype because all the offspring will have at least one allele of tall character.
T t
T TT Tt
T TT Tt
So after cross two phenotype would be homozygous dominant for tall character and the other two will be heterozygous dominant for tall character. Therefore all the offspring would be tall.
Answer:
The correct answer is b. all tall
The disease known as malaria may result in a fever, a decrease in red blood cells, and an enlarged liver and spleen. These symptoms are evidence of__________.
Final answer:
Malaria is caused by Plasmodium protozoa, transmitted by Anopheles mosquitoes, and is characterized by symptoms like fever, anemia, and organ enlargement due to the destruction of red blood cells.
Explanation:
The disease known as malaria may result in a fever, a decrease in red blood cells, and an enlarged liver and spleen. These symptoms are evidence of the effects of the Plasmodium protozoa, which cause malaria and carry out their life cycle within the human host. Anopheles mosquitoes transmit the protozoa from one human to another.
The classic signs and symptoms of malaria, such as fever and anemia, occur because Plasmodium parasites infect and destroy human red blood cells. This results in organ damage and can lead to severe anemia, blood vessel necrosis, and possibly death if not treated promptly. The most deadly species known to infect humans, Plasmodium falciparum, is responsible for the majority of malaria-related fatalities, particularly in tropical regions of the world. Preventative measures against malaria include antimalarial drugs and controls to manage mosquito populations, such as techniques to kill, sterilize, or avoid exposure to Anopheles gambiae, the primary mosquito vector of the disease.
Molecular systematics might examine all of the following types of data EXCEPT ________.
A) proteins
B) DNA sequences
C) amino acid sequences
D) anatomical features
Answer:
Anatomical features.
Explanation:
Molecular systematics may be defined as the use of the molecules to understand and deduce the evolutionary relationship. The classification of the organism is more easy by using the molecular systematics.
The plant evolutionary relationship can be made on the basis of the molecular systematics. The molecules that are used in the molecular systematics are proteins, amino acid, RNA and DNA sequence. The anatomical features might involve in the morphology systematics.
Thus, the correct answer is option (D).
Molecular systematics does not examine anatomical features. It works with data like DNA sequences, amino acid sequences, and proteins, which are used to understand the genetic relationships between different species. option D is the correct answer .
Explanation:Molecular systematics is a science that uses techniques and information from molecular biology to understand the genetic relationships between different species. It mainly works with data like DNA sequences, amino acid sequences and proteins to gather information about the hereditary patterns and evolution. However, it does not deal with anatomical features as these are part of the field of classical systematics or morphological systematics, which is more concerned with physical characteristics and structures.
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A DNA molecule consists of two antiparallel strands of polynucleotides. Each strand is composed of nucleotides bound to each other along the sugar-phosphate backbone.
Answer:
Explanation: The basic unit of a DNA is a Nucleotide. The nucleotide comprises of: the nitrogenous bases, a deoxyribose sugar and a phosphate group. The nitrogenous bases are the purines and pyrimidines . The include, Adenine, guanine, Thymine and cytosine
Answer:
True.
Explanation:
The DNa molecule is made up of two antiparallel strands and complementary to each other. That's because each strand is polynucleotide, which means it is made up of several nucleotides.
Each nucleotide is formed by a nitrogenous base, a phosphate group and a sugar. The heterogenated bases of DNA are: adenine, guanine, thymine and cytosine, and they are responsible for linking the two strands of DNA, since the adenine of one strand is able to make connections with the thymine of the other strand and guanine from one strand is capable of making connections with the cytosine of another strand.
After triacylglycerols are hydrolyzed into free fatty acids and glycerol, how is glycerol used for energy? A. It undergoes β-oxidation B. It enters the glycolysis pathway C. It enters the citric acid cycle D. It is converted to ketone bodies E. It undergoes ω-oxidation
Answer:
The correct answer is B it enters glycolysis pathway.
Explanation:
Tria cylglycerol is a complex lipid which can be defined as fatty acid ester of glycerol.The hydrolytic enzyme lipase act on tri acylglycerol to form fatty acid and glycerol by hydrolyzing the ester bond present between fatty acid and glycerol.
The fatty acid enters the β oxidation pathway and the other product of tricacylglycerol hydrolysis that is glycerol is converted to glycerol -3-phosphate by the catalyric activity of glycerol kinase.The so formed glycerol-3-phosphate is converted to glyceraldehyde-3-phosphate by alcohol dehydrogense enzyme.
The so formed glyceraldehyde-3-phosphate is an intermediate of glycolysis.
The central dogma of molecular biology is that dna is transcribed into mrna, which is then to protein?
Answer:
which is then translated to proteins
Explanation:
The central dogma was given by Francis crick which says that the genetic information passes from DNA to mRNA and mRNA to protein but reverse passage of information is not possible.
The process of conversion of DNA into mRNA is called transcription and the process of formation of proteins from mRNA is called translation. The genetic information is present in the sequence of nucleotides that are present in the DNA.
These nucleotides form the triplet codon in the mRNA and each triplet codon codes for a particular amino acid during translation.
Final answer:
The Central Dogma of molecular biology describes the process by which DNA is transcribed into RNA, specifically mRNA, which is then translated into proteins that carry out cellular functions.
Explanation:
The Central Dogma of molecular biology is a fundamental concept that delineates the flow of genetic information within a biological system. The process starts with DNA transcription, during which the DNA sequence is copied into messenger RNA (mRNA) by RNA polymerases. This mRNA then serves as a template for protein synthesis or translation. During translation, ribosomes read the genetic code inscribed on the mRNA strand in groups of three nucleotides known as codons. Each codon specifies a particular amino acid, which are the building blocks of proteins. Hence, the sequence of amino acids in a protein is determined by the sequence of nucleotides in the mRNA, which in turn is determined by the sequence of nucleotides in the DNA.
Select the three factors from the choices below that determine the size of the actual focal spot on the target anode.
Answer: A focal spot in the x-ray setup is the area of the anode surface which receives the beam of electrons from the cathode. It is the apparent source of x-rays.
Below are some of the factors that affect its size.
Explanation:
Size of the focal spot depends on
* angle of the anode
Other prime factors that affect x-ray emission; under the control of the radiographer includes;
• Miliamperage-second (mAs)(tube current measurement)
• Kilovoltage (kVp) Controls both the quantity and quality of the x-ray beam with the speed and energy.
• Distance (d) - Related to tube design and construction.
• Tube housing
• Target material
• Filtration
• Voltage waveform
In eukaryotic cells, the processes of protein synthesis occur in different cellular locations. Drag the labels to the appropriate targets to identify where in the cell each process associated with protein synthesis takes place.
1. nucleus______.
2. cytoplasm______.
3. free ribosomes______.
4. chromatin______.
5. ribosomes______.
Answer:
1. formation of ribosomal subunits
2. attachment of an amino acid to tRNA
3. translation of cytoplasmic proteins
4. transcription and RNA processing
5. translation of secreted proteins
Explanation:
Please see the attachment
Sheryl was diagnosed with bipolarity when she was a teenager.She's hesitant to tell her friends, and tries her best to hide herdiagnosis from her coaches, teachers, and employers, since she'sseen other people with the illness be discriminated against onaccount of it. Bipolarity is an example of a(n):Select one:
a. Untreatable illness
b. Stigmatized illness
c. Withdrawn illness
d. Contested illness
Answer:b. Stigmatized illness
Explanation:
Due to extreme elevated moods( manic expression); it is difficult for an individual with bipolar disorders to relate and associate with people in immediate environment. This is because once people are aware of this conditions, discrimination sets in, the assumption is that anger and manic display can set in even when engaged even in trivial issues, by eliciting spike potentials in the brain
However, this act, put the victim in state of anxiety, depression,suicidal thoughts, withdrawal, and loss of energy.
Answer:
The correct option is b. Stigmatized illness.
Explanation:
Bipolarity is a mental illness that produces unusual mood swings in a person, including serious episodes of mania and depression. It is considered a stigmatized disease, due to the prejudices generated by psychiatric disorders/mental illness, since in society in general there is confusion regarding bipolar disorder. Stigmatize, refers to when a person or group is negatively indicated, influenced or discriminated by prejudices and stereotypes. Part of the population that was diagnosed with bipolarity, often do not make it public, for fear of rejection by others.
6 Flashing red and yellow lights control some intersections during times when there is __________ traffic flow.
Answer:
Low traffic flow
Explanation:
Flashing red and yellow lights can control some intersections during low traffic flow.
The red traffic light signifies the stop sign and even when flashing, is still recognized as such thus, cars are expected to slow down when approaching flashing red and yellow lights and if the traffic is low, traffic flow can proceed seamlessly
Flashing red and yellow lights are used at intersections during low or irregular traffic flow. They enhance safety especially in areas where speeding and accident rates are high. Areas with emerging businesses or rerouting due to special events can also use such traffic control systems.
Explanation:Flashing red and yellow lights control some intersections during times when there is low or irregular traffic flow. Originally, these lights served to facilitate safe transit for vehicles and pedestrians alike, particularly during non-peak traffic hours or in areas where conventional traffic lights may not be necessary all the time.
For instance, intersecting roads near emerging businesses or industrial facilities may see a dramatic increase in traffic. Furthermore, changes in traffic routing, such as rerouting for special events, can also necessitate the use of these lights. It's important to remember that the primary goal of installing these traffic control systems is to enhance road safety, especially in problematic intersections where speeding and accidents have been observed.
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The nursing instructor is discussing digoxin-induced dysrhythmias. What risk factor would the instructor identify as increasing risk of dysrhythmia in a client taking digoxin?
Answer:
Hypokalemia
Explanation:
The toxicity due to digoxin increases when metabolic disturbances such as hypokalemia occur. Hypokalemia usually occur during the diuretic therapy and leads to electrolytic disturbances. These disturbances increase the sensitivity of the digoxin to produce toxicity. In such scenarios, even a small concentration of digoxin serum can prove to be toxic. Hypokalemia inhibits the sodium-potassium ATPase and even treatment with antibodies specific to digoxin can lead to hypokalemia
"The correct answer is hypokalemia.
Hypokalemia, which is a deficiency of potassium in the blood, is a significant risk factor for digoxin-induced dysrhythmias. Digoxin works by inhibiting the sodium-potassium pump in the heart, which can lead to an increase in intracellular calcium and thus an increase in the force of cardiac muscle contractions. However, when there is hypokalemia, the effects of digoxin are potentiated because low potassium levels enhance the binding of digoxin to the sodium-potassium pump. This enhancement can lead to an increased risk of dysrhythmias such as atrial tachycardia with block, ventricular tachycardia, or ventricular fibrillation.
Other factors that can increase the risk of digoxin-induced dysrhythmias include hypomagnesemia (low magnesium levels), hypoxia, acidosis, and hypercalcemia (high calcium levels). These conditions can alter the electrical properties of the heart and predispose to dysrhythmias, especially when combined with the effects of digoxin. Additionally, renal impairment can lead to increased levels of digoxin in the blood due to reduced clearance, thereby increasing the risk of toxicity and dysrhythmias.
It is important for healthcare providers to monitor potassium levels closely in patients taking digoxin, especially since many of these patients may also be taking diuretics, which can further deplete potassium stores. Proper management of potassium levels can help minimize the risk of digoxin-induced dysrhythmias."
When looking at growth in a human embryo, the head develops before the rest of the body. Such growth from the head to the base of the spine illustrates the ________ principle.
Answer:
Cephalocaudal.
Explanation:
Cephalocaudal refers to the head to the toe of the body. The cephalocaudal principle denotes the motor and the physical development of the individual infants to the early childhood.
This principle explains the phenomena of the post natal development and includes the development of the weight, size, and differentiation of the body. The development always occur from the top to the bottom fashion. The first control of the head will occur and later the toe.
Thus, the answer is cephalocaudal.
The growth pattern in a human embryo, where the head develops before the rest of the body, is an example of cephalocaudal principle.
Explanation:The growth pattern in a human embryo, where the head develops before the rest of the body, is an example of cephalocaudal principle.
This principle states that development occurs from the head (cephalic) to the tail (caudal) or from top to bottom. It means that structures closer to the head, such as the brain, develop earlier than structures further down the body, like the spine.
This growth pattern is evident during embryonic development and helps establish the basic arrangement of tissues in the nervous system.
What is the combination of assessments to investigate neuroplastic and maladaptive brain changes in crewmembers following long-duration spaceflight?
Answer:
sensory, motor, and cognitive assessments
Explanation:
Sensory assessment
Helps to check, determine and infer the perceptions of bodily sense organs(the senses of sight, smell, taste, touch, and hearing) to characteristic of materials
Motor assessment is for assessing day to day motor function activity
Cognitive assessment
It's for assessing different areas of brain function such as memory, concentration, reasoning capabilities e.t.c
This is a cell, which is the basic unit of all life. All organs in human bodies are made of cells and require oxygen to survive. Which two systems work together to deliver oxygen to cells throughout the body?
Final answer:
The cardiovascular system and the respiratory system work together to deliver oxygen to the body's cells and remove carbon dioxide. The cardiovascular system circulates blood, while the respiratory system manages gas exchange in the lungs.
Explanation:
The two systems that work together to deliver oxygen to cells throughout the body are the cardiovascular system and the respiratory system. The cardiovascular system, composed of the heart, blood vessels, and blood, is responsible for moving oxygen-rich blood from the lungs to the cells and transporting carbon dioxide from the cells back to the lungs. The respiratory system, which includes the lungs, enables the exchange of gases; oxygen is absorbed into the blood, and carbon dioxide is expelled from the body.
These systems are integral to the process of respiration, wherein oxygen is required for aerobic cellular respiration, which generates the energy necessary for cellular functions in the form of ATP. Without this collaborative effort between the cardiovascular and respiratory systems to continuously supply oxygen and remove carbon dioxide, cells could not sustain their vital activities.
Therefore, to answer the question, the cardiovascular and respiratory systems are the two organ systems that work in tandem to ensure that oxygen is delivered to every cell in the human body, maintaining cellular function and overall organism health.
Which of the following muscles is probably underactive if a client's support or standing leg falls inward during a single-leg squat assessment?A. adductor complexB. gluteus mediusC. tensor fascia latae (TFL)D. vastus lateralis
Answer:
Answer is A.
Explanation:
Abductor complex include the abductor muscles which are three in number, Longus, Magnus and Brevis.
The abductor muscle of the leg spread the legaway from the midline.
Which of the following is excluded under both the Limited Pollution Liability coverage form and Pollution Extension endorsement?
a. Escape of pollutants
b. Clean up costs
c. Threatened discharge of pollutants
d. Waste disposal leaks
Answer:
Option B
Explanation:
Limited Pollution Liability coverage form has limited coverage facility. It provides scope of covering the pollution liability but does not provide any coverage for meeting out the cleanup expenses. It covers the damage caused by pollution.
While in Pollution Extension Endorsement charge the insurance does not apply to testing, monitoring, clean up, neutralization and reducing the effect of pollutants are covered.
Hence, option B is correct
How does smooth muscle appear different at the cellular level than skeletal and cardiac muscle
Answer:
Smooth muscle:
At cellular level these muscles are cylindrical in appearance. There cells are unbranched. These are non striated.
Skeletal muscles:
These Muscles at cellular level appears as cylindrical and also they are unbranched. These are striated at cellular level.
Cardiac muscle:
These muscles are like skeletal muscles and smooth muscles in the sense of their cylindrical nature but these muscles are branched in contrast to others. These are striated.
Explanation:
Other differences are attached with this answer please find attachment.
Which reaction produces monosaccharides? dehydration synthesis of monosaccharides polymerization of polysaccharides dehydration synthesis of polysaccharides hydrolysis of polysaccharides
Answer:
The correct answer is hydrolysis of poly saccharides
Explanation:
Polysaccharides are composed of numerous monosaccharides units joined with each other by glycosidic linkages.If the polysaccharides are treated with strong acids such as Hydrochloric acid or hydrolytic the glycosidic linkages are broken down resulting in the formation of monosaccharide constituents.
For example homo polysaccharide plant poly saccharide starch is composed of glucose units linked with one another by α-1,4-glycosidic linkage.When starch is digested by amylase enzyme then hydrolysis of starch occur resulting in the formation of di saccharide maltose, dextrin and maltitriose which further undergo hydrolysis by the catalytic activity of various hydrolytic enzymes to generate momosaccharide sububits.
Jumping Jack Flash is a champion racehorse. A special diet and daily exercise have made him the fastest horse in the country. In the wild, Jumping Jack Flash would survive longer than other horses because of his speed. Is this an example of natural selection?
a. Yes, because he is very well adapted to his environment.
b. Yes, because his speed is the result of a random event.
c. No, because his speed is a result of diet and exercise, not a genetic trait.
d. No, because slower horses are better adapted to the environment.
Answer:
c. No, because his speed is a result of diet and exercise, not a genetic trait.
Explanation:
Natural selection is the differential survival and reproductive success of some individuals of a population. This is attributed to the presence of beneficial genetic variations in them. Natural selection always targets the adaptive genetic traits. In the given example, a specific diet and exercise led to increased fitness and survival chances of Jumping Jack Flash. Diets and exercises are not genetic traits on which natural selection can be operative. Therefore, it is not an example of natural selection.
Answer:
no because his speed has been gained by his diet and his exercise.
Explanation:
You arrive on the scene to find a scuba diver on board a boat slumped over in the captain's chair with frothy blood in his mouth. The captain states that the diver was down no more than 15 feet when he ascended rapidly and called for help. Which of the following is most likely?
A.
Caisson's disease
B.
The bends
C.
Air embolism
D.
Decompression sickness
Answer:
Air embolism
Explanation:
When bubbles of air or any other gas cause a blockage of blood vessels in the circulatory system then this is known as air embolism.There are several symptoms that are associated with this condition such as loss of consciousness, difficulty in breathing, bloody sputum, tremors, convulsions, etc.Since in the given condition, the diver is having frothy blood in his mouth and since he ascended rapidly calling for help he is most likely to be suffering from an air embolism.Reflex activity can be modified by the cerebral cortex. For example, you are baking a roast in the oven. As you are moving the roast from the oven to the counter, hot juices splash you. Reflex activity would cause you to drop the pan, but you hold on to it. Explain how the cerebral cortex overrides the reflex.
Answer:
There are different types of reflexes, and some of them can be controlled voluntarily due to cortical processing.
Explanation:
Even if there is an initial myotactic reflex of moving away from the heat, the cortical processing that is subject to learning makes you not let go of the pan. It should be noted that there are different types of reflexes, and not all postural reactions are automatic. The cerebral cortex influences voluntary postural adjustment movements. Such control is mainly performed by the brain stem, where ocurrs the modulation of motor neurons and spinal cord interneurons through the lateral descending (fine movements) and medial (posture and balance) downward pathways.
The cerebral cortex can override a reflex by processing sensory information and integrating it with emotions, memories, and other stimuli to send a motor command that directs voluntary actions, like holding onto a hot pan despite discomfort.
Explanation:When a person comes into contact with a hot object, the immediate, reflexive response is to withdraw from the heat source. This type of reflex action typically involves a sensory neuron detecting a stimulus and sending a signal through the spinal cord, bypassing the brain for a quick reaction. This is why reflexes are so fast because they involve local synaptic connections in a form of a reflex arc.
However, the cerebral cortex can modify this reflex activity. It processes the sensory information and can integrate it with other stimuli, emotional states, and memories. Upon receiving the sensory information of the hot splash from the roast, your cerebral cortex quickly processes the pain but also recognizes the importance of not dropping the pan. It then sends a motor command to override the reflex to hold onto the pan despite the discomfort.
In this case, the cerebral cortex functions efficiently to form a decision based on complex factors such as the consequence of dropping the pan and the potential waste of effort and food. Therefore, when you override a reflex, it is the result of the cerebral cortex engaging in higher-level thinking and decision-making processes, allowing for voluntary control over what would otherwise be an automatic reflexive action.
Life insurance could alleviate estate problems caused by
Answer:
lack of liquidity
Explanation:
Estate is nothing but an individual's total sum of financial assets and liabilities at the time of his death.
Now the estate problems caused by lack of liquidity can be alleviated with the help of life insurance. Insurance will provide the required liquidity for the time. As selling of estate to get proper price might take sum time.
2 questions in one Science thanks.
Answer:
1.)A
2.)D
Explanation:
A person’s estimated maximal heart rate is found by subtracting his or her age from the number _____.
A. 230
B. 210
C. 200
D. 220
The estimated maximal heart rate can be found by subtracting the age from 220.
Explanation:
The correct answer is D. 220.
To estimate a person's maximal heart rate, you subtract their age from 220. For example, if a person is 25 years old, their estimated maximal heart rate would be 220 - 25 = 195.
This formula is commonly used in exercise physiology and can help determine target heart rate zones for exercise.
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A person's estimated maximal heart rate is found by subtracting his or her age from 220. For example, a 30-year-old would have an estimated maximal heart rate of 190 beats per minute.
Explanation:To estimate the maximal heart rate of a person, you subtract their age from the number 220. This formula is commonly used in health, fitness, and physiology to evaluate the effort level and exercise intensity. For example, if a person is 30 years old, their estimated maximal heart rate would be 220 - 30 = 190 beats per minute. It's important to note that this method of predicting maximal heart rate is only an approximation, and actual heart rates can vary depending on an individual's overall health and fitness.
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In a given population, a few individuals may, by random chance, leave behind more descendants than other individuals. Thus, the genes of the following generation will have a higher proportion of the alleles of the "lucky" individuals. Which of the following concepts is this example representative of?
a. the bottleneck effect
b. mutation
c. migration
d. the founder effect
e. genetic drift
Answer:
Genetic drift
Explanation:
Genetic drifting is a phenomenon which results in a variation of allele frequency in a population. It results in the loss of certain allele due to low reproduction and increase in certain allele due to increased reproduction rate
While on an intersession course in tropical ecology, Kris pulls a large, snakelike organism from a burrow (the class was granted a collecting permit). The 1-meter-long organism has smooth skin, which appears to be segmented. It has two tiny eyes that are hard to see because they seem to be covered by skin. Kris brings it back to the lab at the field station, where it is a source of puzzlement to the class. Kris says that it is a giant oligochaete worm; Shaun suggests it is a legless amphibian; Kelly proposes it belongs to a snake species that is purely fossorial (lives in a burrow).Which characteristic should permit the class to conclude that it is probably not a snake?
A) the number of eyes
B) its presence in a burrow
C) the absence of scales on its surface
D) the size and condition of its eyes
E) its length
Answer:
C) the absence of scales on its surface
Explanation:
Snakes bodies are covered with scales. The scales are waterproof and helps for griping on rough branches and movement