Question

Santa Claus and Mrs. Claus are expecting a little bundle of joy soon. Santa Claus is homozygous for good vision. Mrs Claus is nearsighted, which is a recessive trait. They want to know if their baby will need glasses in the future. Help them find the possible genotypes and phenotypes of their new baby

Answer 1

Santa= AA
Mrs Claus= aa
-----------------------
PARIENTAL: AA x aa
Gamets: A A x a a
F1: Aa ,Aa,Aa,Aa -100% good vision
Pariental 2: Aa x Aa
Gamets: A a x A a
F2: AA Aa Aa aa so we have here 75% good vision,25% bad vision which is 3:1
and we have 1 dominant homozygous,2 dominant heterozygous and 1 recessive homozygous,which is 1:2:1.