The scientists set out to determine whether the newts acquire their toxicity from chemicals in their diet They found that newts fed a diet of nontoxic crickets for a year in the lab actually became more toxic not less so newts toxicity does not seem to come from their diet which conditions of natural selection were they trying to confirm A. variability
B. Heritability
C. Difference reproductive success/survival

Mutations are changes in the dna

Ilike to eat pears ya nah wha im sayin b? shout out to all my pears b.

The answer would be c, white eyes are homozygous recessive. in the early 1900s, morgan conducted several experiments with vinegar  flies (drosophila). one  sample revealed an anomaly: a  white-eyed, single male fly. he attempted to breed this fly with the typical red-eyed females. the offspring were all red-eyed. using flies from this new generation (brother-sister pairs)  produced some red-eyed and a few white-eyed flies. the white-eyed were all male. in later experiments, he was able to produce white-eyed females. this proved that white eyes are not lethal to either sex (ruling out a and b). since the percentage of white eyes to red eyes is so low, white eyes are not a dominant trait. it would be a recessive trait.