Normal cells become cancer cells when a. cells do not respond normally to control mechanisms.
b. regulation of cell growth and division is lost.
cells continue to divide without passing through G1.
d. All of the above

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.

the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.yes it's true.