What is the difference between the DNA of a dog and the DNA of a fly?

Studies of fruit flies have shown how shared genes govern the growth and structure of both insects and mammals

Explanation:

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.