Genetics: Analysis and Principles 5th Edition by Robert Brooker

تمرين 15

Two genes in tomatoes are 61 mu apart; normal fruit ( F ) is dominant to fasciated (flattened) fruit ( f ), and normal numbers of leaves (Lf ) is dominant to leafy (lf ). A true-breeding plant with normal leaves and fruit was crossed to a leafy plant with fasciated fruit. The F 1 offspring were then crossed to leafy plants with fasciated fruit. If this cross produced 600 offspring, what are the expected numbers of plants in each of the four possible categories: normal leaves, normal fruit; normal leaves, fasciated fruit; leafy, normal fruit; and leafy, fasciated fruit