Answer:
The answer is C.Production of plants and crops that are resistant of diseases.
The anser is C. recessive located on the X chromosome.
Bird skeletons are very delicate, and therefore, difficult to be preserved. The bones of the birds are soft. The small animals are very prone to physicochemical as well as biological decay. This is why the fossil record of bird is incomplete and well-preserved fossils of birds are rare to find, except at a few unusual sites.
Answer:
click on the photo. this should help. please mark brainliest:)