DIHYBRID CROSS QUESTIONS

Problem:- 1) In rabbits, gray hair is dominant to white hair. Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits: Calculate the dihybrid cross ratio with the help of Punnet’s square & also describe the expected phenotypic & genotypic ratio. GG - Grey BB - Black Gg - Grey Bb - Black gg - White bb - Red 2) An aquatic arthropod called a Cyclops has antennae that are either smooth or barbed. The allele for barbs (B) is dominant over smooth (bb). In the same organism Non-resistance to pesticides (N) is dominant over resistance to pesticides (nn). Make a "key" to show all the possible genotypes (and phenotypes) of this organism.