A rat has 42 chromosomes in eath somatic call. How many chromosomes are in each gamete

Answers

Answer 1

Answer:

21 chromosomes

Explanation:

Somatic cells are a diploid which have 2 sets of chromosomes. If two sets are 42 chromosomes, one set must be 21 chromosomes. Gametes are a haploid which have only 1 set of chromosomes. So in each gamete, there should be 21 chromosomes.


Related Questions

Do you think their ideas are enough to describe who a human person is? do you think there are other ways to describe the human person?​

Answers

Answer: yes

Explanation: a person  has a meaning, a meaning to live a reason

specific amino acids are attached to trna molecules by:

Answers

Answer: The energy of ATP hydrolysis is used to attach each amino acid to its tRNA molecule in a high-energy linkage. The amino acid is first activated through the linkage of its carboxyl group directly to AMP forming an adenylated amino acid; this linkage is driven by the hydrolysis of the ATP molecule that donates the AMP.

Explanation:

Most plants and animals in the world reproduce by sexual reproduction. Which process is responsible for the genetic variation found in organisms that reproduce this way?

Answers

Heyyy
I guess the answer would be because of meiosis in meiosis this is because in prophase the two chromosomes cross over and the genes are mixed leading a random mix of characteristics. Mutations can also cause these differences so the offspring are different and not the exact copy as parents.

I hope this helps ❤️

The illustration below represents____,
which is responsible for genetic diversity.

Answers

Answer: Crossing over

Explanation: This is what a crossing over gene looks like it starts together and separates here is evidence below ⬇️

The illustration below represents the crossing over stage in meiotic cell division which is responsible for the genetic diversity in organisms. Thus, the correct option is B.

What is Crossing over?

Meiosis is the type of cell division during which the chromosome number in the daughter cells become half of that present in the parent cells from which they are produced. From one parent cell four daughter cells are formed in meiosis.

Chromosomes forms the chromatids in the cell which form tetravalent with the non-sister chromatids of the homologous chromosomes. This stage is called crossing over where the genetic material present in each of the chromatids are exchanged which results into genetic diversity in a species. After the crossing over stage, the chromatids separate from each other and goes to different daughter cells.

Therefore, the correct option is B.

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2. What substances travel in the Xylem of flowering plants?

Answers

Water and mineral salts

Answer:

I think water is the substances

what are the advantages of using an electron transport chain

Answers

Answer: The advantages of electron transport chains are directed

towards living things. Electron transport chains permit the cell to take energy from harvesting electrons .

Explanation: Read above.

One difference between cell division in plant cells and in animal cells is that plant cells have

centromeres
chromatin
centrioles
a cell plate

Answers

plant cells do not have centrioles

what type of light (energy) does each light start out as?

Answers

The conversion of light energy into chemical energy is dependent on the substance chlorophyll

Small aquatic organisms, such as coral, are the producers of the ocean. Please select the best answer from the choices provided T F.

Answers

The marine invertebrates of phylum Cnidaria are called corals. Corals are important as they build reefs in oceans and feed on planktons.

The given statement is :

True

The position of corals can be explained as:

The corals are both a primary producer as well as the consumer.

They take energy from algae through the mutual relation between both organisms. The corals feed on planktons, zooplanktons and phytoplankton for energy so they are consumers.

The algae living in coral make food for them and corals produce oxygen.

Therefore, corals are producers.

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Answer:

T

Explanation:

Edge 2022 , trust the process

why does exposure to high temperatures cause an enzyme to lose its biological properties?

Answers

Answer:

Shape of active site changes that's why

Enzymes are affected by temperature. So, as temperature increases, enzymes activities also increases, till optimum temperature is reached. If it goes above the optimum temp, the enzymes becomes denatured or can't function anymore due to change in its active site.

PLEASE HELP ME THIS IS DUE TONIGHT ;-; ILL MARK U BRAINLIEST



In three to five sentences, describe the advantages and disadvantages of these maps in modeling mitosis.

Answers

Answer:

Maps have the advantage of objectivity and presentation of all phases of mitosis, but their disadvantage is the suppression of information, which can confuse students. A scientific model (or map) must be able to present a scientific process or element as it actually occurs, or as close to it

Explanation:

brainliest goes to best answer! Explain the flow of energy as it is transformed through photosynthesis AND aerobic cellular respiration.

Be sure to explain how energy is processed and changed as it passes through and between each process.

EX: Stored energy in gas is converted to heat when you light the stove. This heat is transferred to the food as heat energy while it cooks.

Answers

The correct order of flow of energy and its conversion is

Light energyChemical energyPotential and Kinetic energy

During photosynthesis, plants converts light energy from the Sun into

chemical energy in the form of glucose. Cellular respiration involves the

conversion of chemical energy from glucose into potential and kinetic

energy by body cells

The chemical energy from glucose is converted into ATP which is another

form of chemical energy.The ATP formed helps cells perform various

activities and state of rest such as sleeping in the body through the

conversion of the chemical energy into kinetic and potential energy

respectively.

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Examine the flow chart above depicting the job of a gene known as p53. It plays an important role during the G2 checkpoint of cell cycle regulation. In 4-6 sentences, explain why p53 is often called "The Guardian of the Genome". Is p53 an oncogene (a gene that stimulates the growth of cancer cells) or a tumor suppressor gene (a gene that turns off the growth of cancer cells)? Explain your reasoning.

Answers

The p53 protein is known as the guardian of the genome because this protein prevents errors during DNA replication. It is a tumor suppressor gene.

Tumor suppressor genes

Tumor suppressor genes are genes that play fundamental cellular roles and prevent cell uncontrolled growth.

A tumor suppressor gene can repair errors that occurred during DNA replication, slow down the cycle of cell division, trigger programmed cell death, etc.

The p53 acts to control cell division and cell death, thereby avoiding the emergence of cancer cells.

Learn more about tumor suppressor genes here:

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A heterozygous gray (two genes are involved) cat is crossed with a cat that is heterozygous for these two genes. What is the probability of a black kitten? What is a possible genotype of a black kitten? thanks

Answers

Answer:50% chance, and the genotype would be heterozygous

Explanation:

G=gray r=black

      G     r

G   GG   Gr

r     Gr    rr

what are regenerative cells ???​

Answers

Regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

Stem cells are specific cells capable of generating new specialized types of cells, thereby allowing the regeneration of damaged tissues.

For example, hematopoietic stem cells can be used to generate new red blood cells whose function is to transport oxygen in the bloodstream.

Regenerative cells can be used in tissue engineering in order to restore the function and structure of damaged organs.

In conclusion, regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

Learn more about regenerative cells here:

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what process can lead to an individual having too many or two few chromosomes?

Answers

The process which can lead to an individual having too many or two few

chromosome is as a result of mutation which occurs during meiosis.

Meiosis is the type of cell division which occurs in reproduction and the

production of sex cells such as sperm and egg. This process results in the

production of four unique daughter cells.

The homologous chromosomes not being properly distributed in the

process could lead to such types of error.

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chemicals in the body that transmit nerve impulses are:

Answers

they are called neurotransmitters

70 POINTS


Select the statement that best applies to the image.



The force needed to move the crate is greater if it is full of items than if it is empty.


The force needed to move the crate is smaller if the crate is full than if it is empty.


The force needed to move the crate is the same whether it is empty or full of objects.


The force needed to move the crate is smallest when there are just a few items inside it.

Answers

Answer:

The force needed to move the crate is greater if it is full of items than if it is empty.

consuming ____________will help supply the phytochemicals that enhance the repair process when dna has been damaged.

Answers

Consuming fruits and vegetables will help supply the phytochemicals that

enhance the repair process when DNA has been damaged.

Phytochemicals such as flavonoids are produced by plants and they acts as

antioxidants in elimination of free radicals and in the repair process when

DNA has been damaged.

Fruits and vegetables are the primary sources of flavonoids which aids

DNA repair which is why it's the most appropriate option.

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Suggest and explain what will happen to the population of
zooplankton in March and April.

Answers

As temperatures increase, zooplankton reproductive rates will increase, reducing the delay between phyto- and zooplankton blooms. If phytoplankton become more tightly “coupled” to zooplankton, inputs to the benthos may be altered, modifying energy flow within estuarine and coastal food webs.

Chen draws a diagram to show water changing from a liquid to water vapor. Complete the sentences. _______All the water molecules in the liquid are moving. ________ Some of the molecules have more .________ These molecules move enough to escape the surface of the liquid. This is called . ________ This makes the liquid become

Answers

kinetic energy is needed by the molecules in order to escape from the surface.

All the water molecules in the liquid are moving randomly due to the presence of some energy in it. Some of the molecules have more kinetic energy due to absorption of heat energy from the surrounding environment.

Due to high kinetic energy, these molecules move enough to escape the surface of the liquid. This is called boiling point. This makes the liquid become gas so we can conclude that kinetic energy is needed by the molecules in order to escape from the surface.

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I need desperate help.​

Answers

the answer is b, numerous meaning more in amount

Answer:

Fish make up the largest group of vertebrates.

Explanation:

"Numerous" means a count of something. The second option is the only one that mentions a count of something so that is most likely the answer.

Describe the process of cell division in a plant cell.

Answers

Answer:

Cytokinesis in a plant cell: the cell plate forms down the middle of the cell, creating a new wall that partitions it in two. Cytokinesis, the division of the cytoplasm to form two new cells, overlaps with the final stages of mitosis.

Explanation:

what part does chlorophyll play in photosynthesis?

Answers

Answer:

Explanation:

Chlorophyll's job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar

The area of the continental US most likely to have volcanic activity is the ______________

Answers

Answer:

Alaska

Explanation:

Alaska has the most active volcanos in America.  

Answer:

Aleutian Islands

Explanation:

1. What do you notice about the angle of Earth?

2. How do you think this affects the seasons in different hemispheres (halves) of the world?

Answers

Answer:

1. Today instead of rotating upright, The earth's axis is tilted 23.5 degrees. The angle varies a little over time, but the gravitational pull of the moon prevents it from shifting by more than a degree so. This tilt is what gives us seasons.

2.The cooling effects of more indirect sunlight cause autumn and winter. Because of the earth's approximately 23.5° tilt, the season in the northern and southern hemispheres reversed, about six months apart from each other.

Which of the following is NOT a
response that the body would have
to a stimuli?
A. physical response
B. chemical response
C. creating a feeling
D. evolving the body

Answers

Answer:

c.

Explanation:

the principal gas in the biogas produced in a landfill is

Answers

Answer:

Biogas is composed mostly of methane (CH4), the same compound in natural gas, and carbon dioxide (CO2).

Explanation:

Which of the following is an inherited trait

A. Having freckles
C. Being a good reader
C. Having a tattoo
D. Being a good dancer

Answers

The correct answer is A

I’ll give brainiest. What’s the scientific name for coyote

Answers

Answer:

Canis latrans

Explanation:

CALA COMMON NAMES : coyote brush wolf prairie wolf American jackal TAXONOMY : The currently accepted scientific name for the coyote is Canis latrans Say. It is in the family Canidae.

Hope this helps

Have a great day

~Zero~

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