Answer Happy

Thomas Morgan experiments using flies showed that the F2 generation followed the 3:1 red:white eye ratio (Mendel). Only males had white eyes but not all of the males. From this experiment we cmply that: O white-eyed mutant allele must be located on the X chromosome O white-eyed mutant allele must be located on the Y chromosome there was not a direct evidence that "heritable factors were located in the chromosomes. "heritable factors" and chromosomes are not relatated terms