Find the probability for child blood group | Homework Helpers

1. In a particular squash plant, white fruit is dominant to yellow fruit.A white fruited plant is crossed to a yellow fruited plant.Whe the seeds from this cross are planted, the offspring (F1) produce roughly equal numbers of white and yelloow fruit.What are the genotypes of the parents? Write out the cross

2.Greg has blood type A, his wife Amy has blood type B. They have one child with type A blood.
(a) What is the probability their next child will have type AB blood?
(b) Can they have a child with type O blood? If so, what is the probability?

3.In cats, coat color is an X-linked trait where a black coat is determined by the X^B allele and a yellow coat by the X^b allele. Black and yellow are co-dominant and a heterozygote has a tortoiseshell coat.
(a) A yellow female cat is bred to a black tom.Write out the cross to show the genotypes. What are the phenotypes and phenotype ratios of the kittens?(include the genders)
(b)A tortoishell female is bred to a yellow male. Write out the cross to show the genotypes. What are the phenotypis ratios of the kittens? (include the genders)