Part a: which statement best expresses the central idea of the text?

a
dna editing is necessary to return organisms to their native habitats.
b
scientists lack control over how gene editing will affect a species’ behavior.
c
dna editing may save endangered species but poses ethical risks of eliminating others.
d
scientists agree that using dna editing on animals to save endangered species is ethical.

4, two dominant and two recessive

C.25-28.. . .

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. 

A) the sequence of bases would halt the production of any proteins.