What major evolutionary changes can be seen in the fossil record for Pakicetus please answer i'll give

The major evolutionary changes was overtime Pakicetus had an earbone with a feature unique to whales and an ankle bone that linked it to artiodactyls.

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.

if you know your abc's you should be able to get your answer or just use google