In humans, pharyngeal slits are presents in the embryo and develop into the the ears
<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.
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<span>B. more energy than radio waves and microwaves.</span><span>
Hope this helps!
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