Consider a gene with four alleles a1, a2, a3, and a4. in the cross a1a2 × a3a3, how many offspring genotypes are possible?

Answers

Answer 1
With allele crossing we can represent it for an easier understanding by a table like the following:
                  _______Parent 1_______
              |    |____a1___|____a2____
              |a3|    a1a3      |      a2a3
Parent 2|__|_________|__________          
              |a3|    a1a3      |      a2a3
              |    |                  |

It is possible to form two genotypes. When the there is one homozygous individual, the variety in the combination will depend solely on the variation of the other parent.

Related Questions

Where else is amylase secreted in the digestive system?

Answers

There is 2 types of amylase. But they have to same function which is to digest starch to Maltose. They r salivary amylase and pancreatic amylase.
Salivary amylase is produced in the salivary glands, while pancreatic amylase is produced in the pancreas

On earth, why is carbon, which is found in the carbon family, especially important?

Answers

Carbon is important because its used in photosynthesis and creates oxygen in which humans breathe.
Final answer:

Carbon is crucial for living organisms as it is present in all organic molecules and plays a primary role in the structure of macromolecules. Its importance stems from its bonding properties and energy-containing compounds. However, the burning of fossil fuels has contributed to increased carbon dioxide levels and environmental issues like climate change.

Explanation:

Carbon is one of the most important elements to living organisms, as shown by its abundance and presence in all organic molecules. It is the bonding properties of carbon atoms that are responsible for its important role. Carbon is present in all organic molecules, and its role in the structure of macromolecules is of primary importance to living organisms. Carbon compounds contain energy, and many of these compounds from plants and algae have remained stored as fossilized carbon, which humans use as fuel. Since the 1800s, the use of fossil fuels has accelerated, resulting in an increase in carbon dioxide in the atmosphere, leading to environmental concerns such as climate change.

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What is ability of organisms to survive and reproduce on the range of our men to circumstances?

Answers

The tolerance, or environmental tolerance is the term that describes the ability of organisms to survive and reproduce on the range of our men to circumstances. Tolerate range is the range of a certain factor that can be tolerated. All organisms have tolerance ranges.Organisms cannot survive if there is too much or too little of the factor.


What is the most common blood type in the u.s. population?

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The most common blood type in the US population is O-positive with 38% of the US population

The phylum __________ contains both invertebrate and vertebrate groups.

Answers

The phylum CHORDATA contains both invertebrate and vertebrate groups.
The phylum chordata has four features that are common to all the members of the group, these are: a notochord, a dorsal hollow nerve chord, pharyngeal silt and post a.nal tail. Both vertebrate and invertebrate organisms are found in the group.
Final answer:

The phylum Chordata contains both invertebrate and vertebrate groups, including fish, amphibians, reptiles, birds, and mammals.

Explanation:

The phylum Chordata contains both invertebrate and vertebrate groups. Vertebrates, which have a backbone, are a subgroup within the phylum Chordata. They include organisms such as fish, amphibians, reptiles, birds, and mammals. In addition, the phylum Chordata also includes two clades of invertebrates known as Urochordata (tunicates) and Cephalochordata (lancelets).

Phylum Chordata encompasses animals with distinct features: a notochord, dorsal nerve cord, pharyngeal slits, and a post-an-al tail. Thus, these traits are evident in diverse subgroups like mammals, birds, fish, and amphibians. Chordates exhibit remarkable anatomical diversity, adapting to various environments while sharing a common evolutionary ancestry.

Where does translation take place? where does translation take place? golgi apparatus ribosome endoplasmic reticulum nucleus?

Answers

Translation happens in the cytoplasm of eukaryotic cells, whereas transcription happens in the nucleus.  
Final answer:

Translation takes place in ribosomes located in the cytoplasm of the cell.

Explanation:

Translation is the process of protein synthesis where information coded in the mRNA is used to produce a specific amino acid sequence. It takes place in the ribosomes located in the cytoplasm of the cell. Ribosomes are composed of rRNA (ribosomal RNA) and proteins, and they are responsible for reading the mRNA and assembling the amino acids into a polypeptide chain.

The law of _____explains how alleles separate during gamete formation.

Answers

This is Mendels Law of Segregation
Mendels Law of Segregation

Consider the diagram. mc006-1.jpg Which postulate of the kinetic-molecular theory best describes the event in the diagram? Most of the volume of a gas is empty space. All collisions between particles are perfectly elastic. There is no force of attraction or repulsion between gas particles. The average kinetic energy of particles depends only on temperature.

Answers

I found the exercise on the internet. Attached is a pic of the diagram.
Correct answer:
"All collisions between particles are perfectly elastic." 
This is called elastic collision. Elastic collision is the encounter between two molecules where the total kinetic energy of the molecules before the encounter is equal to their total kinetic energy after. The perfectly elastic collision it only happens, though, when the kinetic energy is not transformed into other forms of energy.

Answer:

The answer is B

Explanation:

Biomes that are found near the equator or near mountains ranges and have high relative humidity and lots of rain are called A) deserts.
B) rain forests.
C) temperate forests.
D) deciduous forests.

Answers

It would be rainforests because it obviously gets a lot of rain and the rain makes the humidity high.

Answer: B) rain forests.

Explanation:

The tropical rainforests are found near the equator, near mountain ranges and exhibit high humidity and lots of rain. These areas receives maximum sunlight which is responsible for the high temperature in the region because of which the evaporation of the available water body takes place at a faster rate hence result in immense rainfall.

How does incomplete dominance differ from a dominant recessive pair of alleles?

Answers

Incomplete dominance is when both of the the alleles represented are heterozygous thus creating a third phenotype known as a blend e.g white and red flowers gives a pink one. Whereas dominant recessive both alleles are homozygous and thus the phenotype depicts that gene.

A blue mineral named after a word which means blue ?

Answers

The blue gemstone Azur - which is Greek for Blue. 

I hope that this helps!
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Labrador retrievers are black, brown, or yellow. in a cross of a black female with a brown male, results can be either all black puppies, 1/2 black to 1/2 brown puppies, or 3/4 black to 1/4 yellow puppies. how many genes must be responsible for these coat colors in labrador retrievers?

Answers

Generally Labrador retrievers are black, brown, or yellow. in a cross of a black female with a brown male, results can be either all black puppies, 1/2 black to 1/2 brown puppies, or 3/4 black to 1/4 yellow puppies. So there must be 2 genes responsible for these coat colors in Labrador Retrievers.

PSYCHOLOGY Assisting in coordination of movement, sleep, respiration, appetite, and facial sensations are functions of the __________. A. pons B. medulla C. cerebellum D. brainstem

Answers

A. Pons. The pons includes nerves that have sensory roles in hearing, equilibrium and taste, as well as facial sensations like touch and pain, and motor function roles including facial expressions, eye movement, chewing and swallowing.
A. the pons. the pons is pretty cool 

Biology question 3

A single muscle cell can contain dozens of nuclei. Which stage of the cell cycle is the not completing? How do you know?

Answers

Final answer:

A muscle cell contains many nuclei due to cellular fusion, which is the combination of multiple progenitor cells. It does not complete the cytokinesis stage of the cell cycle, which normally leads to the division of the cell and its nucleus into two separate cells.

Explanation:

A single muscle cell, known as a myocyte, generally contains many nuclei due to a process called cellular fusion. This process involves the combination of numerous progenitor cells, each with a nucleus, to form a single muscle cell with multiple nuclei.

The stage of the cell cycle that the myocyte is not completing is cytokinesis. Cytokinesis is the phase in which the cell physically divides at the end of mitosis to form two identical daughter cells. If a cell does not undergo cytokinesis, it will not separate, and instead, it may form a cell with multiple nuclei, as seen in muscle cells.

In summary, muscle cells contain multiple nuclei due to the lack of cytokinesis following mitosis, leading to the fusion of multiple cells into a single cell body.

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a collection of specialized cells and cell products that perform a specific function

Answers

A collection of specialized cells and cell products that perform a specific function is called "tissue".

A collection of specialized cells and cell products that perform a specific function is called "tissue".

How many types of muscle tissues are found?

There are three different forms of muscle tissue: skeletal muscle tissue. tissue of smooth muscles. Heart muscle tissue type of tissue is in the muscular system.

Animals with muscular tissue have a specific tissue that uses contraction to apply forces to various bodily components. Muscle fibers are long, slender cells that make up this structure. It manages an organism's mobility skeletal muscle.

Sarcoplasm is the name for the cytoplasm found inside muscle fibers. The sarcoplasmic reticulum, a network of membranes, is present there. The term "sarcolemma" refers to the membrane that encloses the muscle fibers.

A type of connective tissue that is not a connective tissue proper is Cartilage. A connective tissue is a type of tissue in the body of mammals that is used to connect or join all the other tissues in the body system. Some types of connective tissues include the dense irregular connective tissue and loose connective tissue.

Therefore, A collection of specialized cells and cell products that perform a specific function is called "tissue".

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The mineral necessary for the regulation of blood and body fluids is

Answers

Sodium. Other than that I would also include potassium, calcium and magnesium. These are necessary for regulation of blood pressure

Public health officials recognize three types of environmental hazards. these are:

Answers

Chemical, biological, and physical hazards have been recognized as environmental hazards to the public health officials. 

Mendel had no understanding of DNA as the genetic material, yet he was able to correctly predict how traits were passed between generation. What does Mendel’s work show about the value of scientific observation

Answers

It shows that you don't have to be in a lab with fancy equipment to be able to find something

The client asks why lab work is needed prior to starting the medication, nitrofurantoin. what information can the nurse provide to the client?

Answers

Nitrofurantoin is an antibiotic drug that used for treating urinary tract infection. This drug is relatively safe but has toxicity to some organ such as liver, nervous and lungs.
Prior lab work will exclude the chance that the organ is damaged before treatment. It also can be used to monitor if there are major adverse effect happens to the patient.

The lab work is required prior to starting the medication of nitrofurantoin because to prevent any kind of organ damage.

Further Explanation:

Antibiotics are discovered by Alexander Fleming. They are clinically significant in eradicating microorganisms on the eukaryotic surfaces by disrupting the peptidoglycan of the bacterial cells and not harming the host cells. Nitrofurantoin is considered an antibiotic that mainly targets the bacteria in the body. This medication is used to treat urinary tract infections. During the pregnancy period, the prescription of this medicine is not given. This medicine is passed into breast milk and affects the baby. This medicine should be avoided when an individual is suffering from:

• Kidney disease

• Diabetes

• Anemia

• Electrolyte imbalance

To prescribe, the nitrofurantoin doctor done some lab tests to check the allergy of this medicine. Also, to check any kind of kidney problem; this is because, in kidney damage, nitrofurantoin should not be administrated.The nurse should check the further consequence of this drug on an individual.

Learn more:

1. Learn more about the effects of alcohol on brain https://brainly.com/question/2034996

2. Learn more about alcohol is an antidepressant drug https://brainly.com/question/4541397

3. Learn more about the effect of alcohol on body weight https://brainly.com/question/826810

Answer Details:

Grade: High School

Subject: Biology

Topic: Antibiotic

Keywords:

Kidney damage, electrolyte balance, problem, lab, nurse, prior, damage, nitrofurantoin, drug, avoid, medication, doctor, lab test.

Some ocean organisms produce light from chemical reactions. In which part of the ocean do these animals tend to live?

A. The Gulf Stream
B. The surface waters
C. The mesophelagic zone
D. The epipelagic zone

Answers

C. The mesophelagic zone

the answer is C) hi really hope this helps have an wonderfully amazing day/night

Which of the following best describes what happens during a cross-over event?

A. Tetrads change orientation as they line up along the center of the cell.
B. Chromatids of homologous chromosomes exchange corresponding segments. C. X and Y sex chromosomes overlap and combine together during metaphase. D. Spindle fibers overlap and attach to the wrong chromosomes during anaphase.

Answers

The answer is B. Chromatids of homologous chromosomes exchange corresponding segments
The crossover in this context  is the exchange of genetic material between homologous chromosomes. Homologous chromosomes are  only present in the meiosis I, but not in meiosis the II. Because of the crossovers, now a new and unique gene combination is created resulted in completely unique individual

Answer:

b. Chromatids of homologous chromosomes exchange corresponding segments.

In cats, black fur color is determined by an x-linked allele; the other allele at this locus determines orange color. the heterozygote is tortoiseshell. what kinds of offspring would you expect from the cross of a black female and an orange male

Answers

The answer is tortoisehell females and black males is the types of offspring that would be anticipated from the cross of a black female and an orange male. In addition to biology, males are more often pretentious by sex-linked characters than females because males are homozygous for the X chromosome. The haploid diploid is the scheme of chromosomal of to determine the sex in utmost class of ants and bees

Farmer Brown can harvest 2 1/3 acres of corn in 1 day. how many days will it take hime to harvest 10 1/2 acres of corn?

Answers

It will take him 5 days to harvest 10 1/2 acres.

If a mutation occurs such that photosystem ii no longer functions as efficiently as it should, what might be most directly affected?

Answers

Out of the following given choices;

a) The amount of oxygen produced

b) The rate of ATP synthesis by ATP synthase in the chloroplast

c) The rate at which NADPH is produced

d) The rate at which the protons are transported into the thylakoid

The answer is; A

The photosystem captures energy from sunlight and uses it to split a water molecule.   After splitting the water molecule (by taking an electron), the protein complex transports the electron to plastoquinone. The splitting of water molecules results in evolving of oxygen molecules. The hydrogen is what is used to reduce carbon dioxide to glucose.


The amount of oxygen to be generated will be affected directly.

Further Explanation:

Photosystem is responsible for photosynthetic light reactions of algae, bacteria, and plant.

There are 2 photosystems:

Photosystem-1  Photosystem-2

Photosystem-1 plays the main role and utilizes light energy in order to generate high energy carriers such as NADPH as well as ATP. They use p700 photoreceptor and they absorb light of longer wavelength. In this photolysis of water does not occur.

On the contrary, photosystem-2 refers to the protein complex found in the light-dependent reactions of the oxygenic photosynthesis. They present in the thylakoid membrane of the plants, cyanobacteria, and algae. They absorb the shorter wavelength of light. In photosystem 2 photolysis of water occur.

The photosystem absorbs the energy from the sunlight and utilizes it to break the water molecule. After this, the protein complex sends the electron towards the plastoquinone. The breaking of the water molecules leads to the evolution of oxygen molecules. The water is what is utilized to lower the carbon dioxide to a glucose molecule.

Learn more:

Learn more about cellular respiration https://brainly.com/question/543244 Learn more about diffusion https://brainly.com/question/1386629 Learn more about phospholipid bilayer https://brainly.com/question/751529

Answer Details

Grade: High School

Subject: Biology

Chapter: Photosynthesis  

Keywords:

Oxygen, photosynthesis, photosystems 1, photosystem 2, water molecule, carbon dioxide, glucose, evolution, sunlight, hydrogen.

What is the apron-like double fold of fatty membrane that hangs down in front of the intestines?

Answers

Greater Omentum - A four-layered fold of peritoneum connecting the greater curvature of the stomach & 1st part of duodenum to transverse colon which hangs down like an apron in front of the coils of small intestine.

Why is it important for plants to have mechanisms to prevent self-fertilization?

Answers

If plants didn't have mechanisms to prevent self-fertilization, then homozygosity would occur, which is the same genes a plant has. The occurrence of homozygosity of a plant on itself can lead to the reduction of genetic diversity among plants. 

It is important for plants to have mechanism to prevent self fertilization in order to establish genetic diversity else homozygosity will be there without any variations.

What do you understand by self-fertilization ?

Self-fertilization refers to the union of male and female gametes (sex cells) produced by the same person. Bisexual organisms, including the majority of flowering plants, self-fertilize.

Self-fertilization functions as an evolutionary and reproductive mechanism that enables an isolated individual to establish a local population and stabilize desirable genetic strains, but it falls short of supplying a significant amount of variability within a population, limiting the potential for adaptation to environmental change.

Therefore, mechanism to prevent self fertilization is important in plants.

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Why is taking vitamin c ineffective at enhancing iron absorption from standard iron supplements?

Answers

The iron in the supplement is already in the ferrous form.

Jerry is an alcoholic and does not eat enough food. he has been diagnosed with a vitamin deficiency. what blood disorder is the most likely a result of this deficiency? jerry is an alcoholic and does not eat enough food. he has been diagnosed with a vitamin deficiency. what blood disorder is the most likely a result of this deficiency? pernicious anemia hemolytic anemia iron-deficiency anemia aplastic anemia

Answers

Jerry has pernicious anemia

Answer:

The correct answer is pernicious anemia.

Explanation:

In the given case, Jerry is most likely to suffer from pernicious anemia as he has been diagnosed with vitamin deficiency. A medical situation in which blood is low in normal RBCs count in known as anemia. One of the vitamin B-12 deficiency anemia is pernicious anemia. It is caused by an incapability to captivate the vitamin B-12 required for the body to produce an adequate amount of healthy RBCs.

The daily up-and-down movements of organisms in the ocean's water column is called _______.

Answers

The movement of organism in the ocean’s water column is called vertical migration, in the daily up-and-down movement. Vertical migration is the vertical movement or the organism along the water column in response to seasonal, ontogenic, and daily changes. Diel is the most important type of vertical migration.

Measles became prevalent only with the emergence of larger urban centers, making it the "disease of civilization."
a. True
b. False

Answers

Final answer:

Measles becoming prevalent with the emergence of urban centers is true.

Explanation:

The statement that measles became prevalent only with the emergence of larger urban centers, making it the 'disease of civilization,' is True. Measles is a classic example of an infectious disease that thrives in larger populations. Measles requires a large contiguous population to keep it going, and it would not have been able to survive in smaller hunter-gatherer groups. The increase in the size and density of human populations in urban areas facilitated the spread of measles and other infectious diseases.

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