Red-green color blindness is due to a mutant gene in the x chromosome. an xx female with normal color vision and an xy male with normal color vision have a child with karyotype xxy who is color blind. the likely explanation is that the:
a. father was heterozygous for the color-blindness mutation.
b. mother was heterozygous for the color-blind mutation.
c. father had cnv of the color-blind mutation.
d. mother had cnv of the color-blind mutation.
e. none of the other answer options is correct

e. None of the other answer options is correct

Explanation:

Red-green color blindness is due to a mutant gene in the X chromosome.

An XY male with normal color vision => the X chromosome of the father is normal.

The child has karyotype XXY and is color blind. This means he or she receives one Y from the father and two X's from the mother.

This then means that the mother has two X's with two mutant genes.

However, in this question, the mother's color vision is normal.

Therefore, the answer is e.

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.

i thinking chemical change