Biologist edward b. lewis identified a set of master control genes that regulates organs that develop in specific parts of the body. this set of master control genes is called

Choose the molecule that is described by each phrase. energy used during long activities:

Punnett squares are used to show possible combinations of alleles or to predict the probability of a trait occurring in offspring. an incomplete dominance cross is performed between a bird that is homozygous for red feathers and a bird that is homozygous for blue feathers. purple offspring result. then, two of the purple offspring are crossed. according to the punnett square for this cross, how many of the offspring from the second cross will have a feather color that results from incomplete dominance? 1 in 4 2 in 4 3 in 4 4 in 4

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.