Question

Red green color blindness in humans is due to an X linked recessive gene. A woman whose father is color blind possesses one eye with normal color vision and one eye with color blindness

a.propose an explanation for this woman's vision pattern

b. would it be possible for a man to have one eye with normal color vision and one eye with color blindness?

Answer 1

A woman whose father is colorblind possesses one eye with normal color vision and one eye with color blindness because she is a carrier of the red-green colorblindness gene. No, it would not be possible for a man to have one eye with normal color vision and one eye with color blindness because males have only one X chromosome.

Step-by-step explanation:

A woman whose father is colorblind possesses one eye with normal color vision and one eye with color blindness. This is because she is a carrier of the red-green colorblindness gene. Females have two X chromosomes, so they can have one X chromosome with the colorblind gene and one X chromosome with a normal gene for color vision. The dominant normal gene will mask the recessive colorblind gene, resulting in one eye with normal color vision and one eye with color blindness.

No, it would not be possible for a man to have one eye with normal color vision and one eye with color blindness. This is because males have only one X chromosome. If that chromosome carries the gene for color blindness, they will be colorblind in both eyes.