Which of the following helps to explain why a great percentage of males are conceived than females?
a. Y-carrying sperm are more resistant to the acidity of the female reproductive tract.
b. X-carrying sperm reach ova faster than do Y-carrying sperm.
c. Y-carrying sperm swim faster than Y-carrying sperm.
d. X-carrying sperm are smaller than Y-carrying sperm.
C
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a. .05 b. .95 c. .05/2 d. undefined
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