You have reports from four different studies of the effects of a new pesticide on native populations of bees. Each report makes different claims about
whether the pesticide will harm bees and how harming bees can be avoided,
but the studies were done differently. Which of these studies would produce
the most trustworthy results?
O A. A preliminary study conducted for the company that makes the
pesticide.
O B. An investigation whose results have been replicated by several
independent research teams.
O C. A summary of the observations made by the farmers who field-
tested the new pesticide.
OD. A non-replicated experiment conducted by a company that
competes with the pesticide maker.

The answer is constant.

Dthrough a slow process

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.