Question

Comment on the given pedigree chart with respect to:
1. Inheritance of trait​

Answer 1

Explanation:

a)The trait is a dominant one as all the generations are affected.

b)The trait is autosomal because both the sexes are equally affected.

c)If 'A' is the dominant allele for the trait and 'a' is the recessive allele,

The genotype of the generation 1 parent is -aa and Aa.

The genotype of a third child in the generation is- Aa.

The genotype of the first grandchild in -Aa.