Question

Study the pedigree analysis given below:

Answer the following questions:

1. Write genotypes of c and d.
2. Identify whether the trait is:
   1. Sex-linked or autosomal
   2. Dominant or recessive

Answer 1

1. Genotype of c: Homozygous recessive (aa)
   Genotype of d: Heterozygous recessive (carrier) or Homozygous dominent (Unaffected) (Aa or AA)
2. 
   
   1. Autosomal: It is autosomal since an affected daughter is born to the unaffected father in the parental generation. The father must have an affected daughter in order for the sex-linked feature to exist.
   2. Recessive: The trait is recessive, meaning that normal-looking parents have a son and daughter who are affected. It skips a generation.