Answer to Question #139694 in Genetics for arooj

Question

A cross was made between a white male dog and two different black females.The first black female gave birth to eight black pups,the second female gave birth to four white and three black pups.What are the likely genotypes of male parent and two female parent?

Answer 1

The white dog is a homozygous recessive. The black body is the dominant one.

The cross between the 2 black female dogs and white male dog will result to all black pups.

Female 1 is homozygous recessive having a BB phenotype.

Female 2 have a dominant and 1 recessive gene and is heterozygous recessive having a Bb phenotype.