Explanation:
1). Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing.
2) is pic
Only 10% is gained going up the chain
The testes is responsible for
creating sperm cells. It is the male reproductive organ found below the penis.
Answer:
The only way to make a whole population evolve is through natural selection.
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