What could be a possible explanation for the

length of a giraffe's neck?

Due to adaptation and evolution, the giraffes' neck has evolved to be extremely long. As we know, giraffe's tend to eat leaves from higher up branches in the trees. Since few mamals are able to reach up that high, they have more food.

To put it simply, a giraffe's neck has evolved to be so long due to their food choices.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

answer; polycythemia is the correct answer;