Question

In human polydactylism, having more than five fingers on one hand, is a dominant trait. A man who has five fingers on each hand marries a woman who is polydactyl. The couple has 8 children, only 3 of the children are polydactyl. What is the genotype of mother?

Question 3 options:

Homozygous dominant

Heterozygous

Homozygous recessive

Hemizygous

Answer 1

As based on the given situation provided by the problem, we could conclude that the genotype of the mother would most likely be in a Homozygous dominant. In addition, an animal species or a human can be considered as a homozygous dominant if it has two copies of identical dominant allele present in its genotype.