Question

Study the given pedigree chart and answer the question that follow.
Is the trait sex-linked or autosomal?

Answer 1

(i) The trait is recessive.

(ii) The trait is autosomal.

(iii) The genotype of the parents in generation $I$ is $Aa$ and $Aa$.

In generation $II$, the genotype of the third child is $aa$ and that of the fourth child is $Aa$.