Question

If an albino man marries a normal women and 50 offspring are albina and 50 are normal, the women is
A) Heterozygous normal
B) Homozygous normal
C) Heterozygous carrier
D) None of the above

Answer 1

Hint:Albinism is associated with a number of vision defects, such as photophobia, nystagmus, and amblyopia

Complete answer:
Albinism is a genetic condition where people are born without the usual pigment (color) in their bodies. Their bodies aren't able to make a normal amount of melanin, the chemical that is responsible for eye, skin, and hair color. So most people with albinism have very pale skin, hair, and eyes. Let the dominant gene be A and recessive gene be a. The genotype of the father is aa. The genotype of the daughter is Aa (As it isn't mentioned that she has the disease) the genotype of her husband is aa (As he is affected) Now, when the daughter and her husband have children, the types of genotype for the progeny possible are Aa Aa aa aa. That is, there is a 50% chance for the progeny to be affected by albinism.

 Albinism is an autosomal recessive trait. The genotype of such a mother would be 'Aa' i.e. one recessive gene 'a' dominant gene responsible for the presence of melanin would be present.

Therefore,the correct answer is option (C)

Note:Albinism is known to affect mammals, birds, fish, reptiles, and amphibians. Anomalously white individuals are often presumed to be true albinos. Some of those individuals match the description of true albinism.