2 Guinea pigs breed. One has a cream coat which is recessive (b). The other has a black coat (B). Is it possible to produce a cream colored coat? (cream is recessive).

In peas the allele for purple flower colour is (P) dominat over the allele for white. Cross a purebred tall purple plant with a purebred dwarf plant.

Black is dominant in guinea pigs while short hair is dominant to long. Cross 2 heterozygous black, heterozygous short guinea pigs. Determine the frequency of having brown pigs with short hair.

How is sex determined in mammals?

What are the chances a colourblind man will have a colourblind son if he has a child with a woman with no history of colourblindness?

What type of blood can a type A receive? Which blood types can a type 0 receive?