Answer:
3) bb
4) the evidence is that not every generation has it, it skips generations, and it gets passed down even though the parents didn't have it. there are carriers
Explanation:
True.
People began to settle Sumer around 4500BCE. The Sumerians were in control of the area by 3000BCE. Their culture was comprised of cities such as Eridu, Nippur, Lagash, Kish, Ur, and Uruk.
Answer:
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I think the answer is C but idk for sure.
As in printing a book, if there is a slight defect in the mutation, it will be copied to every other mutation, just like a grammatical error in a book.