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John1956PA

(4,566 posts)
2. When I was in seventh grade, I was intrigued by these two statistics.
Sun Oct 5, 2025, 12:45 PM
Oct 5

Our science class curriculum was well developed.

It struck me that the Y chomosome sperm's ability to reach the egg over that of the X chromosome sperm was nature's way to compensate for the fact that the average male lifespan is shorter than than the average female lifespan.

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