Yes, as scientists could figure out what might have changed in the variables she used. Brainliest me and I can give you the whole system.
Answer:
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It's letter c i believe, because they need the DNA's instruction on how to copy the exact tissue copy.
<span>Conjugation in which two cells temporarily combine in order to transfer genetic materials. After combination they then divide again, allowing of the information to pass and replace the previous members of the population.</span>
