What scientist is credited with proving that genes are located on chromosomes?

Answers

Answer 1

There are many answers to this but I can narrow it down to two.
Wilhelm Roux was the one who officially speculated that the chromosomes was the carriers of inheritance.
BUT proving it is another story
Thomas Hunt Morgan showed that genes reside in specific chromosomes. He was able to map the fruit fly's chromosomal map.

Related Questions

What are the effects of consuming a diet made up mostly of fats? there is more than one correct answer; select all the correct answers?

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Though they are an exception, the Inuit traditionally ate a very high fat diet from coldwater mammals like walrus and obtained omega - 3 fatty acids from it and fish oil and had a very low incidence of cardiovascular disease. It has been determined that they have a genetic disposition to be able to survive if not thrive on this diet. Modern man, on the other hand normally cannot survive on a high fat diet as it will most likely lead to heart disease due to increased cholesterol. Interestingly enough though is Dr Atkins diet which is a low carb relatively high fat diet.

which two of the methods for collecting a urine sample are considered sterile technique

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Urine sample can be collected by suprapubic puncture, using urinary catheter or mid-stream urine. From those method, mid-stream urine is not sterile because its has chance to be contaminated by normal flora of penis/vagina.

Answer: suprapubic puncture and from urethral catheterization

What is the major factor that influences the direction of expansion of plant cells and ultimately the shape of the cell?

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THE AMOUNT OF LIGNIN PRESENT in a cell is responsible for this. Once a plant cell stops enlarging, the primary cell wall is reinforced by a secondary cell wall. The secondary cell wall is made up majorly of lignin, which serves a structural function in plants. It provides a skeletal function and ultimately determined the shape of the cell.

what is over utilisation means

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Unnecessary health care (overutilization, overuse, or overtreatment) is healthcare provided with a higher volume or cost than is appropriate.
thats what i got xD - VAL

"jake, a body builder, is drinking two protein shakes that contain 6 raw egg whites each daily. what vitamin deficiency could result"

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It could result in biotin deficiency. Biotin deficiency can be caused by insufficient dietary admission or legacy of at least one innate hereditary issue that influences biotin digestion. Subclinical lack can cause gentle side effects, for example, hair diminishing or skin rash commonly on the face. Neonatal screening for biotinidase insufficiency started in the United States in 1984 and today numerous nations test for this issue during childbirth. People conceived before 1984 are probably not going to have been screened, in this manner the genuine predominance of the turmoil is obscure.

The genetic composition of a normal male child is

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A human somatic cell usually contains twenty-three pairs of chromosomes. Only one of these pairs will be a pair of sex chromosomes. The genetic composition of a male child is twenty-two pairs of autosomes- any chromosome that is not involved in sex determination - and one pair of sex chromosome (XY). This can be represented as 22-XY.

Final answer:

The genetic composition of a normal male child is XY.

Explanation:

The genetic composition of a normal male child is determined by the sex chromosomes inherited from the parents. A male child inherits one s-ex chromosome from the mother (X) and one from the father (Y). Therefore, the genetic composition of a normal male child is XY.

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"describe the mechanism of feedback inhibition and the role this process plays in controlling enzyme activity."

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In biochemistry, feedback inhibition occurs when the end product produced by the reaction using an enzyme, interacts with the enzyme again such that it inhibits the initial reactants. This is important in metabolic reactions to control too much production of amino acids or too much work done by enzymes to break down macromolecules.

Phylogenetic trees constructed from evidence from molecular systematics are based on similarities in _____.morphologythe pattern of embryological developmentbiochemical pathwaysmutations to homologous genestranscribed proteins

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Phylogenetic trees constructed from evidence from molecular systematic are based on similarities in mutations to homologous genes.
A diagram of tree which shows the evolutionary relationship among organisms is phylogenetic tree. A gene which is inherited by a common ancestor in two species is homologous gene.

The name of the receptor region containing hair cells involved in detecting static equilibrium is

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The vestibule of the ear has two ssensory chambers: the utricle and the saccule, and each contin a macula with the receptors for static equilibrium.

The receptor region involved in detecting static equilibrium is the otolith organs, which include the utricle and saccule. These regions contain polarized hair cells with stereocilia embedded in a gelatin membrane with otoconia. The hair cell's mechanoreceptors are responsible for sensing balance and head position through changes in membrane voltage.

The receptor region that contains hair cells involved in detecting static equilibrium is known as the otolith organs, which include the utricle and saccule within the vestibule of the inner ear. These otolith organs contain receptor hair cells with stereocilia that extend into a gelatinous membrane covered by otoconia, which are calcium carbonate crystals. The bending of the stereocilia due to linear accelerations or head tilts relative to gravity opens and closes mechanically gated ion channels, causing changes in the membrane voltage of the hair cell. This mechanoreception allows us to sense our head position and movement, contributing to our sense of balance or equilibrium. These hair cells are polarized in relation to a central point and are connected to the brain via the VIIIth nerve afferent fibers that convey the sensory information.

"which water-soluble compound is considered a conditionally essential nutrient for infants"

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The water soluble compound that is considered to be conditionally important nutrient for infants would be choline. This substance is supplied to the baby in the womb from the mother. It encourages healthy development before giving birth. It is mostly found in liver, eggs, milk and eggs. When the baby is born, it gets the choline requirement from the breast milk. It is important for the synthesis of a neurotransmitter known as actetylcholine which is important for muscle and nerve function. Also, choline is essential for signaling of the cell membrane, lipid transport, homocysteine reduction and normal functioning of the liver.

Which nutrients may slow the loss of cognitive function associated with alzheimer's disease?

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Vitamins E and C may slow the loss of cognitive function associated with Alzheimer's disease.
There is a meta-analysis supporting that notion. Probably these vitamin gives protective effect because of their antioxidant property. Besides that, beta-carotene able to slow the progression as well

What type of active transport helps muscle cells contract?

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The type of active transport which helps muscle cells to contract is called SODIUM POTASSIUM PUMP. In humans, sodium and potassium ions are pumped in opposite direction across the membrane, this builds up an electrical and chemical gradients which drive other transport processes.

Pick the quality that has nothing to do with genetics.

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Qualities that have nothing to do with genetics are dependent on an organism's environment and the organism's genetics do not play a role in determining them. For example, if a person's finger is cut off, this is a trait that is independent of genetics. The loss of a finger will not be inherited into the organism's offspring.
Traits that are dependent on genetics are those such as eye color and height.

What is the name given to the portions of eukaryotic mRNA sequence that are removed during RNA processing?

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The name given to this portion is INTRON. Intron is a portion of the split gene that is found in pre-RNA transcript which is usually removed for degradation during RNA processing. An intron is a non-coding, intervening portion within the primary transcript and is not needed for genetic coding.

What is the difference from a control group and a control variable?

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a control variable is a scientific experiment in which the experimental element is unchanged throughout the experiment

a control group is a group in an experiment that does not receive the treatment by the researchers (untouched by them) and used to see the changes between the controlled group and that of the group that received the vial

hope this helps

What can dr. williams or her staff say to the mother of the deceased patient when she calls for information?

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According to the U.S. Department of Health and Human Services, it is part of their health information privacy to disclose details about the patient's location, general health condition without going deeper into detail and religious affiliations, as long as the caller asks for the patient's name. This is also applicable for emergency cases when the patient is not able to give his consent. However, if the patient is conscious, he would be asked for his preferences. If he wishes for the hospital not to divulge and medical information even to his family, then the hospital should respect it and comply.

A student used a ruler to measure a pencil, as shown below: A pencil beside a metric ruler. The ruler is scaled from 1 centimeter to 10 centimeters, with markings for millimeters between each number. One end of the pencil is beside the 0 on the ruler, and the pencil point is midway between the 5 and 6. © 2010 Jupiterimages Corporation Which of the following measurements is both accurate and precise?

Answers

Imagining the illustration where a pencil is beside a metric ruler, scaled from 1 centimeter to 10 centimeters, with markings for millimeters between each number and one end of the pencil is beside the 0 on the ruler, and the pencil point is midway between the 5 and 6, we can conclude that the precise and accurate measurement of the ruler would 5.5 centimeters. Since the point is pointing in the midway of 5 and 6, we can interpret that the point is pointing in the exact half between 5 and 6 thus we can conclude that this would be a 0.5 addition to 5, giving us the 5.5 cm.

the measurement from the ruler states that the pencil is 5.5 centimeters long. so the missing options in this question would be,

55 mm

5 cm

44 mm

6 cm

so 55 mm in centimeters is 5.5 cm, so your answer would be 55 mm.

hope i helped. :)

A disease in which the red blood cells are abnormally shaped is called ___________________________________.

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Sickle cell anaemia is a genetic mutation in which the red blood cells of the human body contain abnormal haeme molecules.
They won't be able to carry as much oxygen as healthy red blood cells.

A split-brain client is shown a frog in her right visual field. she is asked to identify what she sees. she most likely will be able to

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tell and write the answer at the same time

using your text, compare oxygen, sodium, nitrogen, and neon. which atom has the greatest capacity to gain electrons

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The atom with the greatest capacity to gain electron is OXYGEN.
Oxygen has atomic number 8 and it has six electrons in its outermost shell. In order to attain octet structure, oxygen prefer to gain electron from other elements which have electrons which they can donate.

Because of prolonged drought, the trees on an island are producing nuts that are much smaller with thicker and harder shells. what will happen to the birds that depend on the nuts for food?

Answers

The above example illustrates evolutionary adaptation.

This is a phenotypic or versatile characteristic, with a practical part in every individual creature, that is kept up and has been advanced by common determination. Living beings confront a progression of ecological difficulties as they develop, and demonstrate versatile pliancy as attributes create because of the forced conditions.

Anti-infectives are used to treat urinary tract infections which include which anatomical structures? (select all that apply.)

Answers

These anatomical structures are the following:
1. The urine itself which serves as an antiseptic, washing potentially harmful bacteria out from the body during normal urination
2. The ureters join into the bladder in a manner designed to prevent urine from backing up into the kidney when the bladder squeezes urine out through the urethra.
3. The prostate gland in men that secretes infection-fighting substance.
4. The immune system defenses and antibacterial substance in the mucous lining of the bladder eliminate many organisms.
5. The vagina of a healthy women, it is colonized by lactobacilli, a beneficial microorganisms that maintain a highly acidic environment (low pH) that is hostile to other bacteria. It also produces hydrogen peroxide, which help eliminate bacteria and reduces the ability of Escherichia coli (E. coli) to adhere to vaginal cells that is the major bacterial culprit in urinary tract infection.

2. Which organisms utilize a one-way air flow through their lungs to maximize air flow efficiency and oxygen consumption? A. Amphibians B. Fish C. Mammals D. Birds

Answers

The best answer is D, birds.
For more information and details on the way a bird's respiratory system works:
https://asknature.org/strategy/air-flow-patterns-facilitate-efficient-gas-exchange/

The correct answer is option D, that is, birds.

Birds are the species that uses a one-path air flow via the lungs to enhance the efficiency of air flow and consumption of oxygen. The flow of air in birds plays an essential function at the time of flying. In addition, greater oxygen consumption and airflow efficiency are required by the birds as their heart pumps briskly in order to tackle the flapping of wings that make them fly.

Name the heaviest flying bird of prey.
A. emu
B. condor
C. ostrich
D. bald eagle
E. peregrine falcon

Answers

The heaviest bird of prey is the condor.

Harvey takes the drug viagra. how does the drug help produce erections for harvey?

Answers

The answer to this question would be: B. It relaxes blood vessels in Harvey’s penis, allowing them to expand.

Viagra active component is sildenafil citrate which has the ability to relax the smooth muscle in the artery and dilate the arteries of the penis. As the arteries in penis dilate, the blood flow into penis will be increased. This will make penis filled with blood and give pressure to nearby veins causing them to close. All this event cause increased pressure in penis that was making the erection

certain species of what are now recognized as indicators of environmental pollution

Answers

Microcystis is a genus of freshwater bacteria which is a part of harmful Algae blooms. These algae bacteria are indicators of phosphorus run off in places such as Lake Erie. These bacteria are signs of environmental pollution.

Answer:

The correct answer is lichens.

Explanation:

Lichens are a symbiotic association between the fungi and algae. The lichens are bioindicators, that is, they are very subtle to atmospheric pollution like nitrogen as they obtain all their water and nutrients from dry and wet atmospheric deposition. The deposition of nitrogen can enhance the nutrients load.

Some of the species of lichens are more forbearing to nitrogen in comparison to others. The communities of lichens are monitored by the scientists, that is, if an enhancement in nitrogen tolerant species in association with a reduction in nitrogen sensitive species takes place, it suggests that there is an elevation in atmospheric nitrogen deposition.

describe some of the contradictory forces you are aware of in your life that make sexual development difficult

Answers

I think it would be religion. In my opinion, religion is one of the factors that shape the culture of many countries. However, in the modern times, religion had somehow hindered children's understanding about sexual development. They believed that it would encourage teens to engage in pre-marital intercourse. I think sex education should be emphasized to make teens understand the idea of engaging such activity. Giving the knowledge and possible consequences would allow children to understand that it should after marriage and not before it. Although, this would only apply to Christians. I also think that with the help of sex education children would understand why they should protect themselves from STDs and unplanned pregnancy.

Final answer:

Societal biases, personal uncertainty, and challenges faced during adolescence can make sexual development difficult.

Explanation:

Some contradictory forces that can make sexual development difficult include societal biases, personal uncertainty, and challenges faced during adolescence. Society's biases against certain sexual orientations can lead to questioning and difficulty accepting one's own sexual orientation. This can cause feelings of guilt, rejection, and uncertainty. Additionally, the challenging and uncertain nature of adolescence can make sexual development more difficult, as feelings of different or changing orientation or nonconformity may add to the overall challenges faced during this time.

According to selye, if your body's defenses are declining after dealing with a prolonged period of stress, you're at which stage of the gas?

Answers

The correct answer to this is:

“Exhaustion”

Selye states that if the stressor prolongs beyond the capacity of the body, we exhaust our own resources and becomes susceptible to disease and death. If the body’s resistance is weaker than the stress, then we reach the point of exhaustion.

An oxygen atom with a charge of (+2) has ______________________.
a. two more protons than the neutral atom
b. two fewer protons than the neutral atom
c. two more electrons that the neutral atom
d. two fewer electrons than the neutral atom

Answers

This would be the case, if the element of oxygen were to have 2 fewer electrons than what is present in the neural atom.

We can calculate the formal charge of a given species, by simply taking the species number of valence electrons and subtracting it by the number of electrons in the Lewis diagram if given.

The hormones ________ and ________ are involved in arousal and increased heart rate, blood pressure, respiration, and other autonomic nervous system functions.

Answers

The correct terms to fill in the blanks are epinephrine and norepinephrine. The hormones epinephrine and norepinephrine are involved in arousal and increased heart rate, blood pressure, respiration, and other autonomic nervous system functions. These hormones are being produced by the adrenal medulla and the nervous system, respectively. They are both the flight and fight response hormones that are being released when the body is experiencing a lot of stress. These substances act directly to the muscles of the blood vessels in order to constrict them resulting to an increased blood pressure and heart rate. Also, at this state, the function of the kidney is stopped temporarily by these hormones.

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