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
77julia77 [94]
3 years ago
8

Red-green color blindness in humans is inherited as an X-linked recessive trait. Usually, heterozygous females are not colorblin

d. However, a doctor identified an unusual case in which a heterozygous female was colorblind in her right eye but had normal color vision in her left eye. If you assume that this phenotype was not due to a new mutation, explain how this might have occurred.
Biology
1 answer:
Maksim231197 [3]3 years ago
6 0

Answer:

The mentioned characteristics of variability are witnessed because of the phenomenon known as X chromosome inactivation in heterozygous females. As females possess two X chromosomes, they actually should not possess any color blindness.  

The phenomenon of X-chromosome inactivation takes place in a random manner at the time of embryo development. During this only one X chromosome is inactivated. If the chromosome comprising the defective gene is inactivated, the individual will possess normal vision.  

If the chromosome comprising the usual gene gets inactivated than the individual will be color blind. In the given case of female, X inactivation took place in one eye. The inactivation of normal alleles has taken place and thus she possesses normal vision with one eye and is color blind in the other eye.  

You might be interested in
The ________ of the lungs is an indication of their expandability, how easily the lungs expand and contract.
elena-s [515]

Answer:

The answer is compliance.

Explanation:

4 0
3 years ago
What do all living things have in common with eachother
raketka [301]

Answer:

growth, reproduction, they are made up of cells, they respond and adapt to their environment, and obtain and utilize energy.

Explanation:

every living thing has those 6 characteristics.

3 0
3 years ago
Read 2 more answers
The summer solstice is the longest day of the year because the Earth is tilted A) the most toward the Sun. B) the farthest from
andrew11 [14]

a) most toward the sun

6 0
3 years ago
Read 2 more answers
Easy biology question below first correct answer gets brainliest
Anna11 [10]

Answer:

25%

Explanation:

5 0
3 years ago
What di eukaryotes most likely evolve from?
otez555 [7]

Answer:

Prokaryotes.

Explanation:

Most of the Eukaryotes most likely to evolve from the Prokaryotes.  Prokaryotes are basically unicellular organisms that lack internal membrane-bound structures. So, they do not carry nucleus and generally have a single chromosome. Most of them have a cell wall outside  the plasma membrane, which is a thin layer of lipid that completely surrounds the cell.  Prokaryotes reproduce by binary fission method.

8 0
3 years ago
Other questions:
  • What separates the oral cavity from the nasal cavity when raised and in contact with the posterior pharyngeal wall?
    15·1 answer
  • Why is nitrogen fixation important to all organisms?
    9·1 answer
  • please help quickly! very easy question, i just want to check my answer! Y = yellow leaves y = green leaves S = smooth seeds s =
    15·1 answer
  • All the members of a species they live in an area make up
    8·1 answer
  • Toxic waste can enter foods through the contamination of groundwater. <br> a. True <br> b. False
    12·2 answers
  • Reaaallly need help!!​
    15·1 answer
  • The height above the ground. *
    8·1 answer
  • How do analogous structures evolve?
    12·1 answer
  • What animal has green bones?
    10·2 answers
  • Which of the following best describes the connection between cardiovascular disease and
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!