<h2>Answer:</h2>
The great genetic and phenotypic diversity among humans is due to crossing over during meiosis in the human population.
<u>If crossing over does not happen in meiosis then, there will no genetic and phenotypic diversity in humans.
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In simple words, the faces and traits will reappear in generations.
<h2 />
True: because it acts as a semi permeable membrane.
According to all known laws of aviation, a bee
The answer I think is the environment for this one. <span />
<span>Nuc is short for nucleus</span>