How do some cells become brain cells and others become skin cells, when the DNA in all the cells is exactly the same?

Answers

Answer 1

Answer:

it has the ability to turn off genes


Related Questions

For purposes of the law a mental disorder is:
Select one:
a. a disorder such as drug or alcohol dependence
b. all of the above are correct
оооо
C. any disorder or disability of the mind
d. a disorder such as learning disabilities

Answers

Answer:

C

Explanation:

if its a mental disorder i think it would be a disability of the mind

C. Any disorder or disability of the mind

Identify the products of cellular respiration and photosynthesis

Answers

Answer:

Photosynthesis- glucose and oxygen

Cellular respiration- carbon dioxide and water (and ATP).

Explanation:

Hope this helps! Please mark as brainiest!!!!

Which of the following represents types of aquatic mammals from most aquatic to least aquatic?

Answers

Answer:

I would say polar beats

Explanation:

As polar bears actually don't have to get in water..

Not sure ok sorry

How does a worker bee develop a queen out of the larva stage?

Answers

Answer:

New virgin queens develop in enlarged cells through differential feeding of royal jelly by workers. When the existing queen ages or dies or the colony becomes very large, a new queen is raised by the worker bees. When the hive is too large, the old queen will take half the colony with her in a swarm.

Explanation:

"Definition" a. a characteristic that is not passed from one generation to the next in the genes but instead is acquired during the lifetime of an individual b. To mate two plants or animals to produce another generation c. A unit of DNA that determines a specific trait in an organism d. The transfer of traits from parents to their offspring e. A chart used to predict the proportion of offspring that will have a certain trait when two organisms are crossed f. A gene in a gene pair that is not expressed when paired with a dominant gene g. An organism that is the offspring of two similar organisms that are not the same species h. A gene in a gene pair that is always expressed i. A characteristic of an organism; for example, eye color, hair color, or height j. The science of heredity; the study of how traits are passed from parent(s) to offspring k. The discoverer of the basis of genetic theory l. When both genes from a homologous pair are identical m. Factors in the environment of an organism that limit the full expression of a gene n. A twisted and coiled strand of DNA within the nucleus that carries the codes for reproductive traits such as eye and hair color o. The strands of genetic material that determine traits of daughter cells (stands for deoxyribonucleic acid) p. When both genes from a homologous pair are different q. Two similar chromosomes; one from the mother and one from the father r. The links that hold the two sides of the DNA molecule together

Answers

Answer:

a, Acquired characteristics

b. Breeding

c. Gene

d. Hereditary or inheritance

e. Punnet square

f. Recessive gene

g. Hybrid offspring

h. Dominant gene

i. Trait

j. Genetics

k. Gregor Johann Mendel

l. H o m o z y g o u s

m. Environmental factors

n. Chromosome

o. DNA

p. Heterozygous

q. Homologous chromosome

r. Covalent bonds

Explanation:

there are six elements that make up most of the human body. Which of the following is not one of these six elements?

Answers

Answer:

oxygen, carbon, hydrogen,

Explanation:

hope this helped u :)

why do cells need to divide

Answers

Answer:

the answer is b

Explanation:

the reproduce daily o grow and to keep up with the dying cells

Cells need to divide for body to grow and for body tissue such as skin to continuously renew itself, so option b. Cell division is how organisms grow is correct

What is the cell divison process is called?

Most of the time when people refer to “cell division,” they mean mitosis, the process of making new body cells. Meiosis is the type of cell division that creates egg and sperm cells. Mitosis is a fundamental process for life.

What is the main purpose of cell division?

Cell division for growth and repair creates exact copies of a cell. it is important it make possible for a living thing to grow, creates new cells to replace damaged or dead cells.

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Where is mRNA produced?

Answers

I think mRNA is produced in the nucleus

the answer would be in the nucleus

In your own words, explain what "the more mass a substance has, the greater the object's thermal energy" means.

Answers

“The greater the weight of something, the more heat it contains”.

What are bacteria that live in extreme conditions called

Answers

Answer:

extremophiles

Explanation:

live in conditions of extreme temperature acidity, alkalinity or chemical concentration

Extremeophiles is the correct answer

a small number of finches live in a protected bird sanctuary natural selection is like least likely to occur in this population​

Answers

Answer:

Natural selection

Explanation:

Answer:

Natural selection is least likely to occur because the birds are living in a protected sanctuary.

Explanation:

A protected sanctuary is important for protected species or "small numbered finches. Protected sanctuaries are made so that almost extinct species can start to repopulate without the effect of any natural selection.  


How is food transported in plants?​

Answers

Answer:

through phloem the food is transported in plants

Explanation:

Hope its helpful

Which of the following is an example of
an organism's niche?
A. A dog chasing its tail
B. A bird fell out of its nest
C. The little boy is late for school
D. The early bird gets the worm

Answers

Answer:

A. dog chasing its tail

Answer:

D

Explanation:

One who arrives first has the best chance for success, 

Prehistoric people used what for knives and arrowheads

Answers

Answer:

spears

Explanation:

Which example is most likely made from both metals and gemstones?
Necklace
Soda can
Widow frame
Kitchen utensils

Answers

Answer:

A. necklace

Explanation:

Necklace  is most likely made from both metals and gemstones.

What is necklace?

A necklace might be a straightforward chain made of gold or silver, a string of beads or diamonds, or a pendant suspended from a rope. It qualifies as a necklace as long as it is worn around the neck.

Unless you are a professional or amateur geologist—or perhaps you earned a merit badge studying them as a scout—you probably won't be able to explain the differences between these four hard natural materials: minerals, rocks, gemstones, and crystals.

The different types of necklace are chocker, Matinee and opera. Long and functional, opera length necklaces. The necklace should hang below the bust when worn as a single strand.

Therefore, Necklace  is most likely made from both metals and gemstones.

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Seaweed belongs to which of Earth’s spheres?

Answers

Answer:

The answer is: Biosphere

Answer:

biosphere

Explanation:

biosphere in living things and seaweed is living hoped this helped

Cedar waxwings are one species of bird that is adapted to


withstand our cold winters. Bird watchers in Barrie provide


cedar waxwings with seeds at birdfeeders during winter


months. K/


UTI


(a) Would the seeds alter the carrying capacity of the


ecosystem? Explain.


(b) Provide a hypothesis that explains why bird watchers have


noted an increase in the falcon population in recent years.

Answers

Answer:

B)

Explanation:

Hope that helped! :)

A pair of mice are bred several times generating the following data table. What are the most likely genotypes of the parents?

Answers

Answer:

This question lacks options, the options are:

A) FF and ff

B) FF and Ff

C) Ff and Ff

D) Ff and ff

The answer is D (Ff and ff for parent 1 and 2 respectively)

Explanation:

This question depicts a single gene coding for fur colour in mice. The gene controls two traits, black fur and white fur, encoded by alleles F and f respectively.

According to the question, a pair of mice has been bred several times to generate the same data of 22 black fur and 23 white fur mice. Based on this data, it shows that the phenotypic ratio of black to white mice is 1:1.

To get a 1:1 phenotypic ratio of black fur offspring to white fur offspring, the parents mice must have genotypes Ff (heterozygous) and ff (same recessive alleles).

In a cross between parents Ff × ff (see punnet square), offsprings with the following genotypes will be produced: Ff, Ff, ff and ff. Ff is black furred while ff is white furred.

Ff (2) : ff (2) is equivalent to Ff (1) : ff (1).

Hence, a data of 22 black mice and 23 white mice which represents a 1:1 ratio will only be produced by parents mice with genotypes: Ff and ff.

Which of the following represents a group of protists that is difficult to classify as either protozoan or algae because some species have chloroplasts, but others do not?

Answers

Answer:

some species have chloroplasts

Explanation:

Which of the following statements is correct? (1) Translation always begins with an AUG start codon. (2) The start codon establishes the reading frame of mRNA. (3) The mRNA molecule is read one codon at a time until a stop codon is reached.

Answers

Answer:

1, 2 and 3

(1) Translation always begins with an AUG start codon.

(2) The start codon establishes the reading frame of mRNA.

(3) The mRNA molecule is read one codon at a time until a stop codon is reached.

Explanation:

Translation is the second stage of the gene expression process which involves the synthesis of amino acid sequence (protein) from an mRNA transcript. During translation, the nucleotide sequence are read in a group of three nucleotides called CODON. The codon are found on the mRNA molecule and each one specifies an amino acid.

Translation starts with a start codon, which is AUG coding for methionine. Due to the fact that translation will start with an AUG codon, it automatically sets the reading frame of the mRNA molecule i.e. the pattern the mRNa will be read during translation. The start codon (AUG) determines how the reading frame will progress considering it is read first or initiates the translation process.

Translation continues in the RIBOSOME, where each codon is read by the tRNA one at a time until a stop codon is encountered. A stop codon signals the end of the translation process, and releases the peptide sequence. The mRNA stop CODON specifies no amino acid and are UAG, UAA, and UGA.

why is there a greater volume of living organisms at the bottom of the energy pyramid?

Answers

Answer:

Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level.

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. What is the probability of having offspring that have wrinkled seeds and yellow seed color for the cross RRYY ´ RrYy?

Answers

Answer:

The probability of a cross between RRYY x RrYy to generate a yellow and wrinkled seed offspring is 0%.

Explanation:

Circular and yellow seeds are overwhelming and wrinkled and green seeds are passive. It is vital to keep in mind that resective characteristics are as it were displayed when the sibling has two passive alleles for those characteristic, in the event that the descendant includes a latent allele and a overwhelming allele, the characteristic that will be presented is the overwhelming one. For this reason, able to say that a cross between RRYY x RrYy plants, would not create any descendant with wrinkled and yellow seeds. Typically since, the descendant of a crossing, must show an allele of each parent. One parent as it were has overwhelming alleles (RRYY), so able to say that all descendant will get 1 overwhelming allele for color and a overwhelming allele for seed surface, anticipating the sibling from communicating latent characteristics.

Answer:

0%

Explanation:

Edge

Which statement accurately describes one role of water on Earth?
Water in plants and animals transports nutrients into cells.
Water reflects sunlight that hits the oceans.
Water builds up rock and soil.
Water holds heat by trapping it within the equator.

Answers

Answer:

A

Explanation:

i took this a while ago

The statement that describe the role of water on Earth is Water in plants and animals transports nutrients into cells.

What is Water?

Water is a colorless, odourless and tasteless liquid which can be found on Earth

It is a universal solvent and it is of great abundance on it.

It is a ensures the existence of life on Earth.

Therefore, The statement that describe the role of water on Earth is Water in plants and animals transports nutrients into cells.

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ASAP PLZ
what resources do rabbits need from their habitat in order to survive? name 3 things

Answers

Rabbits need to rely on their habitat, just as humans do. A few resources they rely on their habitat for may be food, water, and shelter.

Answer:

Rabbits need crops (food) (lettuce, grass, flowers, etc...) Rabbits don't drink water because they get it from the food. They also need a burrow, to hide from predators in, and they need carbohydrates.

Explanation:

Hope that helps!!! :)

Why is gene regulation especially important during development?

Answers

So that gene diversity will happen , it’s important so the people’s children don’t all look the same

Hemophilia is a sex-linked recessive trait in humans. If a father and a son are both hemophiliacs, but the mother is normal, her genotype must be____. (Note: the H's are superscripts.) * XhXh XHXh XHXH XhY

Answers

Answer: XHXh (Note: the H's are superscripts.)

Explanation:

Hemophilia is a sex-linked recessive trait which means that the males having one altered copy of the gene is enough to cause the medical condition( as they have only one X chromosomes and females have two)

In this case the genotype of father and son is such that they are affected by hemophilia.The son has mother's X chromosome and father's Y chromosome.

XhY is the genotype of father and son. As mother would be heterozygous because she is not affected, her genotype will be XHXh.

What are some of the consequences of acid rain? Thanku

Answers

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes. The more acid that is introduced to the ecosystem, the more aluminum is released, die of biodiversity in environment and other organism that supports decomposition of material

The ecological effects of acid rain are most clearly seen in aquatic environments, such as streams, lakes, and marshes where it can be harmful to fish and other wildlife. As it flows through the soil, acidic rain water can leach aluminum from soil clay particles and then flow into streams and lakes.

Give the word and chemical equations for respiration and photosynthesis

Answers

Answer:

PHOTOSYNTHESIS

carbon dioxide(CO2)+water(H2O)+sun light in the presence of chlorophyll(C55H72O5N4Mg)⇒glucose(C6H12O6)+oxygen(O2)+ATP(energy)

RESPIRATION

Glucose(C6H12O6)+Oxygen(O2)⇒carbon dioxide(CO2)+water(H2O)+oxtgen(O2)

Explanation:

I HOPE THIS WILL HELP YOU :)

what is the purpose of the xylem vessels

Answers

Answer: According to research ;

Xylem Vessels are  plant vascular tissue that conveys water and dissolved minerals from the roots to the rest of the plant and also provides physical support.

Explanation:

Xylem tissue consists of a variety of specialized, water-conducting cells known as tracheary elements.

what kinds of bacteria are spherical, endospores,cocci, bacilli, spirilla

Answers

The cocci kind of bacteria are spherical in shape. Rod-shaped bacteria are bacilli, and spiral-shaped bacteria are called spirilla. Thus, the correct option is C.

What are the cocci bacteria?

A coccus or cocci bacteria is any bacterium or archaeon which has a spherical, ovoid, or generally a round shape. Bacteria are categorized into different classes on the basis of their shapes into three classes which are cocci (spherical-shaped bacteria), bacillus (rod-shaped bacteria) and spiral (two types: spirillum and spirochete bacteria).

Different classes and examples of bacteria are Streptococci, in which cocci are arranged in chains. Example: Streptococcus mutans. Diplococci, in this cocci are arranged in pairs. Example: Neisseria gonorrhoeae. Monococci are single cocci. Staphylococci are the clusters of cocci. Example: Staphylococcus aureus.

Therefore, the correct option is C.

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