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
love history [14]
2 years ago
6

1. a man and woman are both affected with the brca1 gene for familial breast cancer, a disease that has 80% penetrance in all in

dividuals who carry the allele. they are both heterozygotes for the disease-causing mutation. what is the probability that they will have a phenotypically normal child?
Biology
1 answer:
allochka39001 [22]2 years ago
8 0

The probability to have a phenotypically normal child will be 40% because parents are both heterozygotes for this disease-causing mutation that has 80% penetrance.

<h3>What is genetic penetrance?</h3>

The expression genetic penetrance refers to the chances of expressing a given phenotype which may be associated with both genetic and environmental factors.

In conclusion, The probability to have a phenotypically normal child will be 40% because parents are both heterozygotes for this disease-causing mutation that has 80% penetrance.

Learn more about genetic penetrance here:

brainly.com/question/5662654

#SPJ1

You might be interested in
When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles. Which componentes f the blood
ad-work [718]

In human blood, there is a compound inside the RBCs called haemoglobin which ensures that the muscle will receive enough oxygen during exercise.

<h3><u>Explanation:</u></h3>

In human blood, the red blood corpuscles contain the haemoglobin. Haemoglobin is a iron chelated compound containing porphyrin ring and a globin tail which can establish co-ordinate covalent bond with both oxygen and carbon dioxide. The bonding element depends on the concentration of these two gases. In lungs, where the oxygen concentration is more than carbon dioxide, the haemoglobin bonds with oxygen and brings it to the tissues where carbon dioxide concentration is more. This makes the haemoglobin to release oxygen and bond with carbon dioxide which is brought back to lungs. This is the process by which each and every tissue including the muscles recieve oxygen.

In muscles there is Myoglobin which is another iron-porphyrin compound which has several times more affinity for oxygen than haemoglobin. This helps to extract more oxygen from haemoglobin in muscles.

3 0
3 years ago
A recessive gene located on the X chromosome is the cause of one type of colorblindness (denoted by Xc). Let the genotype for no
Alex73 [517]

The scenario will be Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son

<h3>What is color blindness?</h3>

The condition is frequently inherited. Certain eye diseases and medications are also possible causes. Men are more affected than women.

Color blindness is characterized by the inability to distinguish between red and green shades.

A colorblind man's genotype is XcY, and a heterozygous carrier female's genotype is XcX. A cross between XcY and XcX would result in progeny with the following ratio=

Son: 25% colorblind daughter: 25% colorblind son: 25% of carrier daughters with normal vision: 25% normal son.

Thus, the couple is likely to have a son who is half normal and half affected. Similarly, the couple is likely to have 50% normal daughters and 50% colorblind daughters.

For more details regarding color blindness, visit:

brainly.com/question/25621649

#SPJ1

6 0
2 years ago
What two things are needed for cellular respiration
Tema [17]
Glucose and water are needed for cellular respiration. Carbon Dioxide and water are just products of cellular respiration.
8 0
3 years ago
Which is an example of kinetic energy?
Mkey [24]
A downhill skier traveling down a hill has a large amount of kinetic energy because of their mass and high velocity.
6 0
3 years ago
Is vaping a positive or negative feedback?
allochka39001 [22]

Answer: I think Negative?

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • The extraordinary accuracy of the dna polymerase iii enzyme lies in its ability to "proofread" newly synthesized dna, a function
    11·1 answer
  • What are the predominant im forces between molecules of water?
    9·1 answer
  • How can microwave radiation affect different organisms
    14·1 answer
  • In an experiment, a geneticist crosses two pure-breeding pea plants, one with round seeds and the other with wrinkled seeds. If
    12·1 answer
  • Which anticodon pairs with the codon GAU?<br><br> A) CUA <br> B) GAU <br> C) CTA <br> D) GAT
    8·2 answers
  • Find the total number of each item requested below for the compound shown. 2H2CO3
    15·2 answers
  • (GIVING BRAINLIEST!!)
    14·2 answers
  • Where to rescue workers get their energy
    10·1 answer
  • Is american in a drought?
    15·2 answers
  • In order to respond to stimuli in the environment, organisms must -
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!