1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Scilla [17]
3 years ago
6

A woman whose sister tested positive for a specific mutation in the BRCA1 gene, which increases the risk for breast and ovarian

cancer, is found not to have that mutation but does have a mutation of unknown significance near the known mutation site. How should this woman be counseled? Select one: a. She should be informed that her risk for breast cancer is greater than the general population but not as great as her sister’s risk. b. She should be informed that because she does not have the mutation, her risk for breast cancer is not greater than that of the general population. c. She should be informed of her gene mutation status and be presented with all the available prophylaxis options and reconstruction options. d. She should be informed that she does not have the specific mutation but that because another mutation is present she should be vigilant about screening
Biology
1 answer:
kondaur [170]3 years ago
8 0

Answer: A. <em>Her risk is for breast cancer is greater than the general population, but not as great as her sister's risk. </em>

Explanation:

BRCA1 and BRCA2 are specific mutations that have been associated with a greater risk of Breast Cancer. Breast cancer affects 1 in 8 women (12.5% lifetime risk), Familial Breast Cancer accounts for 1 in 5 cases (20%); BRCA 1 and/or BRCA 2, is present in 5-10% of all Breast Cancer Patients. Women that have relatives on 1st degree with Breast Cancer or BRCA1 and BRCA2 mutations have a higher risk of presenting Breast Cancer than the general population.  

You might be interested in
Which of the following is NOT considered a cause of the Dust Bowl?
vagabundo [1.1K]

The following cause that is not considered in the formation of a Dust Bowl is the lack of farmers in Oklahoma. The answer is letter B. in fact, the number of farmers increases due to the high grain prices of Worl War I that encourages farmers to plow millions of acres of natural grass to plant wheat.

8 0
2 years ago
When a system of classification is based on observation of a predetermined set of factors, it is called: a natural system, an ar
Viefleur [7K]
It is called an artificial system. 
4 0
3 years ago
Read 2 more answers
The part of the endoplasmic reticulum with proteins attached is called
ANEK [815]
The rough endoplasmic reticulum (versus the smooth), which is where the ribosomes are and make proteins.
6 0
3 years ago
5. What is the difference between mitochondria and chloroplast?
FinnZ [79.3K]

Answer:

C. Mitochondria convert sugars into energy, while chloroplasts carry out

photosynthesis.

Explanation:

Chloroplasts have the ability to use light to convert carbon, derived from carbon dioxide into sugar. Mitochondria on their part break down simple sugars into carbon dioxide and release energy. Chloroplasts are larger and have greater complexity than mitochondria, and they have several critical functions to perform, besides the generation of ATP. Apart from converting carbon dioxide to carbohydrates they synthesize amino acids, fatty acids, and the lipid contained in their own membranes.

Mitochondria are to be found in both plant and animal cells, whereas chloroplasts are found only in plant cells. The former have a structure composed of a prokaryotic cell, whereas Chlorplasts are made up of stacks of thylakoids surrounded by a fluid called stroma. According to some theories, mitochondria exist because of endocytosis of aerobic bacteria, while chloroplasts are around because of the result of endocytosis of photosynthetic bacteria.

Chloroplasts exist only in plant cells and lend the green color of most plants. Mitochondria on the other hand are found in both animal and plant cells and are engaged in the production of ATP. To use simple layman language, mitochondria in animal cells changes energy into forms that animals can use, while chloroplasts in plant cells convert sunlight into energy that plants can use. From this it follows that mitochondria in a sense are the power plant in the animal cells, because it generates energy. Chloroplasts provide the green color to the plant due to the chlorophyll present in them.

Mitochondria cells are 1 to 10 um long in length. These can change shapes, get around, and divide into two. The cell is surrounded by an envelope of two membranes. The membrane on the outside is smooth while the other one is marked by what are called cristae.

Photosynthesis happens only in plants. This is because only plants contain chloroplasts. Thus we can see that mitochondria and chloroplasts are the building blocks of life for plants and animals respectively in the sense that they provide nourishment to the organisms. The two are also representative of the dividing line between the two kingdoms of life on earth-the animal and the plant.

These two structures are markers of two philosophies of life form if one may use the use the term. One that is self sustaining, manufacturing its own food, the other that is dependent upon the former as the primary source of food, but far more complex and evolved way of life in many other aspects.

4 0
2 years ago
Why can we see the moon at Night?
user100 [1]

Answer:

because the sun shines on it when it rotates. depending on where the sun rises and setes makes the lunar phases. Such as full moon. New moon.

Explanation:

3 0
3 years ago
Other questions:
  • Describes estuaries?
    7·2 answers
  • Because martha leads a mostly sedentary lifestyle, the clinician should provide what type of guidance to help her increase her a
    9·1 answer
  • What do you think would happen to a habitat if the plant diversity declines??
    6·2 answers
  • Good land and production practices can help increase greenhouse gas emissions. true or false
    9·2 answers
  • Explain how the diaphragm aids in breathing.
    8·2 answers
  • What organelle can you name along with their function
    6·1 answer
  • All of the black bears in a cave make up
    13·1 answer
  • Which best describes the organisms in this kingdom?
    6·1 answer
  • Could someone help me with this please
    13·2 answers
  • Select the correct answer.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!