The BRCA-1 genes in humans encode proteins that have role in maintaining DNA stability. Mutation in this gene results in formation of non-functional protein, which is not able to repair damaged DNA, resulting in a significantly increased risk of breast cancer. BRCA-1 is a/an: Group of answer choices Proto-oncogene Homeotic gene Oncogene Tumor suppressor gene

Answers

Answer 1

Answer:

tumor suppressor gene

Explanation:

A tumor suppressor gene is capable of modulating cellular processes during cell division and/or replication, thereby avoiding uncontrolled cell proliferation and tumor development. For example, the p53 gene is a tumor suppressor gene that encodes a protein (p53) which is well known to regulate critical cellular processes such as, for example, cell cycle arrest and programmed cell death (apoptosis). Moreover, breast cancer genes BRCA1 and BRCA2 are tumor suppressor genes that regulate the repair of damaged DNA through the Homologous recombination (HR) pathway. In consequence, mutations in BRCA1 and BRCA2 genes can increase the risk of developing breast cancer.


Related Questions

If an area has very little permeability, such as a city where the ground is mostly concrete, what will happen to most of the rainwater?
A. It will become groundwater.
OB. It will be pumped into underground reservoirs by large machines.
C. It will become runoff.
D. The type of surface it falls on does not affect rainwater.

Answers

Answer:

C

Explanation:

The water won't be able to penetrate the ground so can't become ground water and reservoirs are usually above ground not underground so it will become run off.

Permeability is the ability of the substances to get diffused easily across the surface. The concrete ground results in the rainwater becoming runoff. Thus, option C is correct.

What is permeability?

Permeability is the capacity of the water or any fluid to pass and diffuse across the substances or any membrane to get from the higher to lower concentration.

The concrete ground and roads are not permeable and do not allow water to pass through the material and effects the collection of the rainwater through infiltration.

The rainwater is unable to filter into the groundwater and becomes runoff. This runoff gets accumulated on the roads and can even lead to floods and drain blockages.

Therefore, option C. the less permeable roads cause rainwater to become runoff.

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The water cycle is a closed system, meaning no water enters from beyond the system nor leaves the
system. What does that say about the importance of keeping water on Earth free from pollution?

Answers

Answer:

there are no possible changes adaptations

Explanation:

what i mean by that is if a substantial amount of pollution enters the water cycle its going to be nearly impossible for it to get out

If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.

What is groundwater?

Groundwater has been defined as water present in the underground water below the soil as well as in the cracks of the earth. The percentage of freshwater in the world would be 30%. There are mainly three types of groundwater and these are hand-dug wells, as well assprings, and drilled boreholes.

The water stored under the ground has obtained from the rain and stored in the ground so that it can be used later. Ground water has very clean and fit for drinking and the reason could be the soil present on top and work as filter and the groundwater is free from all microorganisms.

Therefore, If water present on earth is polluted anywhere in the cycle, it starts affecting the system of water and percolation as well as plants become limited that what they will do in order to clean the water. It is possible that if ground is polluted than water will also get polluted. It means that the water present on earth is same the water present from the beginning and will continue to be the same water that is available.

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520 644 3017
password 12345
iam a teacher
time 2 15​

Answers

Answer:

What is this?????????????????????????

arrange these structures in order of size, beginning with the smallest
stomach
mitochondrion
starch grain
tracheal cell
nucleus

Answers

Answer:

1.starch grain (smallest)

2.nucleus

3.mitochondria

4.tracheal cell

5.stomach (largest)

The original pair of individuals involved in a cross is called
the _____?

Answers

Answer:

p generation

Explanation:

What are the masses of gray matter that lie deep within the cerebral hemispheres and that are responsible for regulating intensity and precision of voluntary movement

Answers

Answer:

Cerebral cortex.

Explanation:

The masses of gray matter that lie deep within the cerebral hemispheres is called cerebral cortex. The cerebral cortex is responsible for many brain functions such as sensation, perception, memory, association, thought, and voluntary physical action. Damage occur to cerebral cortex can leads to many cognitive, sensory, and emotional difficulties in the body. It is also responsible for regulating intensity and precision of voluntary movement.

Felicity draws this diagram on the board to explain one
of Mendel's experiments for her classmates. She says
that it shows the cross between two first-generation
offspring. What is the error in her diagram?
All
peas should be green.
All peas should be yellow-green.
One pea should be green and three peas should be
yellow.
O One pea should be yellow and three peas should
be green.

Answers

Answer:

The right answer is C

Explanation:

Answer:

The right answer is C

Explanation: Just got it right on edge 2022

There are 2 types of endoplasmic reticulums.

Plz explain, i will give brainliest

What are the 2 types?

How are they different from one another?

Explain how their structures are different.
Explain how their functions (jobs) or what they make are different.

Answers

The two types of endoplasmic reticulum are rough endoplasmic reticulum and smooth endoplasmic reticulum. The main differences are the rough endoplasmic reticulum membrane is bound by ribosomes but the smooth endoplasmic reticulum isn’t, the rough endoplasmic reticulum creates protein molecules, and smooth endoplasmic reticulum creates lipids, phospholipids and steroids.

Which animal population do scientists frequently study in order to identify specific ways to evaluate the impacts of contaminants on biological communities?

a. bottlenose dolphins

b. giant tortoises

c. mallard ducks

d. swan geese

Answers

Answer:

mallard ducks I think so

Answer:

D.

Explanation:

Galapagos tortoises have been and continue to be threatened by predation and habitat destruction from invasive species, and increasing human

Insects: Please choose the correct answer from the following choices, and then select the submit answer button. typically have a younger flying life stage and an older aquatic life stage after metamorphosis. generally give birth to live young. typically mate and produce young during their larval stage. have a respiratory system with spiracles connecting to tracheae.

Answers

Answer:

The correct option is ( have a respiratory system with spiracles connecting to tracheae).

Explanation:

The class INSECTA are under the phylum arthropoda which is the largest phylum in the animal kingdom. The insects are mainly land animals, they are widespread and adapted to all types of environment. They are also the only invertebrates that can fly. Examples of insects include: ants, butterflies, beetles, aphids and grasshoppers.

An insect has a well-defined head, thorax and an abdomen. The head had six segments and bears a pair of jointed antennae, compound eyes, simple eyes and mouthparts. The thorax had three segments, each bearing a pair of jointed walking legs. The abdomen has eleven segments and may have sensory and reproductive structures.

An insect carries out gaseous exchange by means of a network of open air tubes or TRACHEAE inside it's body. These tubes have openings called SPIRACLES to the exterior. Therefore the insects have an respiratory system with spiracles connecting to tracheae.

how are proteins and nucleic acids related

Answers

Answer: Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis

Explanation:

why some fruits have 1 seed and some gruits have many seeds​

Answers

Answer:

Number of seeds in a fruit depends on the number of ovules in an ovary before fertilizations. The fruits which have more seeds in them have more number ovules in the ovary of flowers such as watermelon and those with single seed have only single ovule in the ovary of flowers like mango

Answer:

Number of seeds in a fruit depends on the number of ovules in an ovary before fertilisation. The fruits which have more seeds in them have more number ovules in the ovary of flowers such as watermelon and those with single seed have only single ovule in the ovary of flowers like mango.

the growth of a fungal hyphae tip is?

Answers

Fungal hyphae extend continuously at their extreme tips, where enzymes are released into the environment and where new wall materials are synthesised. ... So, in effect, a fungal hypha is a continuously moving mass of protoplasm in a continuously extending tube.

Which diagram correctly shows how heterozygous alleles are found on homologous chromosomes?

A chromosome is labeled Upper A a.

A chromosome is labeled a a.

2 chromosomes are labeled Upper A and a.

2 chromosomes are labeled a and a.

Answers

Answer:

the chromosome are found in the nucleus of a body cell in pair

The use of another orga....​

Answers

Answer:

C biological control.

Explanation:

Biological control because a natural organism is controling pest. Unlike using pesticides. That would be chemical control. lol

Answer:

C. Biological Control

Explanation:

The use of biological beings such as organisms to control pest andm uch more is considered to be Biological Control

Mengapakah penggunaan mikroskop
elektron penting dalam mengkaji sel?​

Answers

Answer:

Mikroskop elektron mampu membesarkan saiz sel dengan kuasa gandaan yang tinggi

biology b unit 10 workbook

Answers

Answer:

i also needed help w this

Explanation:

Bjr pouvez vous m'aider

Answers

Answer:

no entiendo este idioma soy nuevo y hablo español

How would the introduction of a predator species affect the stability of an
ecosystem?
A. The stability would not change because the new predator would
simply replace the native predator.
B. The stability of the ecosystem would increase as a result of the
introduction of a new predator species.
C. The new predator would be unable to hunt effectively for native
prey, so the stability would not change.
D. The native prey might not be able to protect itself against the new
predator, so the prey population would probably decline rapidly.

Answers

Answer:

b. is the answer in your question.

What term describes the organisms that obtain energy from dead organic matter and aid nutrient cycling

Answers

Answer:

Decomposers.

Explanation:

Decomposers are the organisms that obtain energy from dead organic matter and help in nutrient cycling. The example of such type of organisms are bacteria and fungi. These organisms feed on the dead bodies of plant and animals. It perform two function i.e. clean the environment by removing the dead body through feeding on it and add nutrients in the soil which helps the plants to grow more efficiently.

PLS HELP 20 PTS

Write a supported hypothesis of how the body would react if the peripheral nervous system was shut down while the central nervous system continues to function.

Answers

Explanation:

The real magnitude of this challenge can perhaps be best judged by considering the structural and functional complexity of the human brain and the bewildering complexity of human behavior. The human brain is thought to be composed of about a hundred billion (1011) nerve cells and about 10 to 50 times that number of supporting elements or glial cells. Some nerve cells have relatively few connections with other neurons or with such effector organs as muscles or glands, but the great majority receive connections from thousands of other cells and may themselves connect with several hundred other neurons. This means that at a fairly conservative estimate the total number of functional connections (known as synapses) within the human brain is on the order of a hundred trillion (1014). But what is most important is that these connections are not random or indiscriminate:

They constitute the essential "wiring" of the nervous system on which the extraordinarily precise functioning of the brain depends. We owe to the great neuroanatomists of the last century, and especially to Ramón y Cajal, the brilliant insight that cells with basically similar properties are able to produce very different actions because they are connected to each other and to the sensory receptors and effector organs of the body in different ways. One major objective of modern neuroscience is therefore to unravel the patterns of connections within the nervous system—in a word, to map the brain.

What are the methods of waste disposal ? Write in briefly.​

Answers

Answer:

Methods of waste disposal are :-

Biogas plant: - Biodegradable material is used to produce biogas and manure.

Sewage treatment plant: The drain water is treated at plants before adding it to river.

Land filings: - The waste are buried in low-lying areas and compacted with bulldozers.

Composting: - Organic waste are filled in compost pit to make compost for plants.

Recycle: - This means that you collect plastic, paper, glass and metal items and recycle these materials to make required things instead of synthesizing or extracting fresh plastic, paper, glass or metal. In order to recycle, we first need to segregate our wastes so that the material that can be recycled is not dumped along with other wastes.

Reuse: - This is actually even better than recycling because the process of recycling uses some energy. In the ‘reuse’ strategy, you simply use things again and again. Instead of throwing away used envelopes, you can reverse it and use it again. The plastic bottles in which you buy various food-items like jam or pickle can be used for storing things in the kitchen.

Refuse: -This means to say No to things people offer you that you do not need. Refuse to buy products that can harm you and the environment, say No to single-use plastic carry bags.

Repurpose - This means when a product can no more be used for the original purpose, think carefully and use it for some other useful purpose. For example, cracked crockery, or cups with broken handles can be used to grow small plants and as feeding vessels for birds.

In the image below, what molecule is being released by cellular respiration
and used in photosynthesis?
A. 02
B. CO2
C. H20
D. C6H1206

Answers

I believe the answer is b.

The fibrous protein that gives skin its flexibility and helps skin regain its shape after being expanded is:

Answers

Answer:

Elastin          

Explanation:

The elastin is defined as an extracellular matrix protein which lends to the elasticity and also resilience to the tissues such as the lungs, skin, arteries,  tendons, and the ligaments.

Elastin synthesized from precursor molecule named tropoelastin.

Elastin is the fibrous protein which gives the skin its flexibility and also helps the skin regain its shape.

Which food contains mostly polsaccharides

Answers

Answer:

food with carbohydrates

Explanation:

they comprises of two or more mono saccharides

How many genes make up the human genome?
four: adenine, thymine, guanine, and cytosine
23 pairs of genes
20,000–25,000 genes
3 billion genes

Answers

About 20,00025,000 genes make up the human genome.

GENOME:

Genome of an organism refers to the total genetic makeup of that organism. It includes all the genes present in the organism.

Genes are the basic unit of inheritance found on (deoxyribonucleic acid DNA).

A project called Human Genome Project worked to determine the sequence of the human genome and its constituent genes and it was estimated that humans have between 20,000 and 25,000 genes.

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C: 20,000–25,000 genes

During the process of genetic recombination, crossing over occurs between two nonsister chromatids. DNA segments are exchanged between two nonsister chromatids during meiosis I. None of the above. maternal and paternal chromosomes pair and physically exchange DNA segments. All of the above.

Answers

Answer:

DNA segments are exchanged between two non-sister chromatids during meiosis I.

Explanation:

An exchange of chromosome segments or parts between non-sister homologous chromatids occurs which is also called crossing over. This crossing over occurs in the meiosis I that is responsible for the variation in the offspring produced. The formation of hybrid species occurs due to this exchanged of DNA segments between two non-sister chromatids.

Which base does Adenine pair with in RNA?
A. Uracil
B. Guanine
C. Thymine
D. Cytosine

Answers

Answer:

A. Uracil would be the answer.

__________ commonly cause increased energy and alertness, increased heart rate and respiration, and loss of appetite.

Answers

Answer:

Stimulants commonly cause increased energy and alertness, increased heart rate and respiration, and loss of appetite.

Stimulates commonly cause increased energy

A molecule of water is comprised of:
A. One atom of negatively charged hydrogen and one atom of positively charged oxygen.
B. One atom of negatively charged oxygen and one atom of positively charged hydrogen.
C. Two atoms of positively charged hydrogen and one atom of negatively charged oxygen.
D. Two atoms of negatively charged hydrogen and one atom of positively charged oxygen.

Answers

It’s option c.
But actually water has both covalent and ionic characteristics. It is 33% ionic and 67% covalent, so it’s not right to say that it’s made up of two positive H and an oxygen atom with negative charge.
With regards to four options given third is most relevant one.
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