Which is a part of the cell theory? a)cells come from pre-existing cells b)cells have a nucleus c)organisms with one cell must be seen with a microscope d)organisms must have more than one cell to live

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.

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