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
ddd [48]
3 years ago
11

Hemophilia B, a blood clotting disorder, is an X-linked recessive trait. What is the expected percentage of offspring with hemop

hilia that would be produced by a father who does not have hemophilia and a mother who is heterozygous for this trait
Biology
1 answer:
Lemur [1.5K]3 years ago
6 0

Answer:

The correct answer is 25%.

Explanation:

Considering that Hemophilia B is an X-linked recessive disease, than for it to be observed in female offspring, the mother must be homozygous recessive because females have XX chromosomes and if the father transfers only the dominant gene then the female offspring will always be heterozygous dominant.

In the case of a father who carries the dominant gene on his X choromosome and a mother who is heterozygous for the disease meaning she has both the dominant and the recessive gene, if we calculate the percentages for this situation, we see that for the first generation, one female offspring is heterozygous dominant, one female offspring if homozygous, one male offspring carries the dominant gene on his X chromosome and the other male offspring carries the recessive gene on his X choromosome which is the one that carries the disease.

I hope this answer helps.

You might be interested in
One of the most important characteristics of a pesticide is how long it will stay deadly in the environment, a characteristic ca
artcher [175]

Answer:

persistence

Explanation:

This characteristic is often describe as a way of

how long it will be useful, just like how long

will the pesticides could be useful in killing

the things that it is useful for in which is in

consistent with the given statement above.

8 0
2 years ago
Describes the path of a drop of blood leaving the human heart?
soldier1979 [14.2K]

Answer:

There are two paths of a drop of blood leaving the human heart. First, the deoxygenated blood leaves the heart and second, oxygenated blood leaves the heart,

Explanation:

Deoxygenated blood leaves the heart through an artery called pulmonary artery which take this blood to the lungs. After that, oxygenated blood carries from lungs to the heart through pulmonary vein. The oxygenated blood in the heart leaves the heart through aorta and distribute this blood in all parts of the body.

3 0
3 years ago
How would cactuses in their ecosystem change through the everyday act of living?
Reil [10]

Answer:

They may change due to environmental changes. for example, if a cactus suddenly experiences a drought, it may change to become better at holding water than before. if it suddenly experiences large amounts of rainfall, it may change to release more water, etc.

8 0
3 years ago
I need helppp :( science ~
Savatey [412]
I believe the answer is a prokaryote.
5 0
3 years ago
What are condensation nuclei?
Furkat [3]

Answer:

Cloud condensation nuclei or CCNs are small particles typically 0.2 µm, or 1/100 the size of a cloud droplet on which water vapor condenses. Water requires a non-gaseous surface to make the transition from a vapour to a liquid; this process is called condensation.

MAYBE I THINK ;)

8 0
3 years ago
Read 2 more answers
Other questions:
  • What will happen to the species in this ecosystem if the water temperature increases close to the warmest temperature shown on t
    10·1 answer
  • Why is there a difference between the time it takes the moon to orbit the earth and the time it takes the moon to go through all
    14·1 answer
  • Which is one of the most dramatic triggers of sudden mass movements?
    12·1 answer
  • What is a branch point on a cladogram
    15·2 answers
  • How does global warming affect biodiversity?
    7·1 answer
  • If a farmer fertilizes her fields and then a huge rainstorm takes place,
    14·1 answer
  • Which part of the energy pyramid will we find the highest amount of toxins?
    5·1 answer
  • What happens to the blood pressure when the blood vessels get longer?
    14·1 answer
  • Kidney<br> Cuboidal cell<br> Epithelial tissue<br> Urinary system
    11·1 answer
  • Which of the following is an example of parasitism
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!