A sperm containing a Y chromosome swims faster than a sperm containing an X chromosome.

Name: A sperm containing a Y chromosome swims faster than a sperm containing an X chromosome.
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Question

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Research has shown that sperm containing a Y chromosome, which determines male sex, swim faster than sperm containing an X chromosome, which determines female sex. However, this difference in speed is thought to be small and may not significantly affect the likelihood of fertilization.

A Sperm Containing a Y Chromosome Swims Faster Than a Sperm