Answer to Question #278305 in Genetics for ram

Question

1)    In guinea pigs, black fur is dominant over white fur. How could an animal breeder test whether a black guinea pig is homozygous or heterozygous?

Answer 1

If it will be homozygous then all the offspring's of test cross will be of black fur while as if it is heterozygous then black and white fur offspring will be in equal ratio.