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Giant sperm

เผยแพร่: 28 พ.ค. 2559 14:31 โดย: MGR Online

This image provided Romano Dallai, Italian National Academy of Entomology shows a scanning electron micrograph image of a fruit fly sperm, which when unraveled reaches about 2.3 inches long, 1,100 times bigger than human sperm. (Romano Dallai, Italian National Academy of Entomology via AP)

New research shows that the female fruit fly drove the evolutionary process that made the speck of a bug have sperm that is 23 times longer than its body.

FILE - In this Sept. 22, 2006 file photo, fruit flies are observed at the Agrarian Health Service in Lima, Peru. For a long time, the debate has gone on: Does size matter to females? Biologists now say, definitively, that it does. Among fruit flies. (AP Photo/Martin Mejia,File)