NPR News: For Female Fruit Flies, Mr. Right Has The Biggest Sperm

For Female Fruit Flies, Mr. Right Has The Biggest Sperm
It's not unusual for males to try to impress females with big body parts. Consider antlers on deer, or elaborate tails on peacocks. Some male fruit flies take a different approach: giant sperm.

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Làm đẹp Blog 247 May 26, 2016 at 12:04AM
Category Health & Science