io9 
Jun 18, 2009 11:41 AM
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« prevScientists have known for a while that one way males compete to inseminate females is by producing massive amounts of sperm. The more sperm you produce, the more likely that it will reach the egg before the other guys' sperm does. But in some species, it turns out that the winning sperm are always the biggest. If you can produce a sperm so big that it pushes all the other sperm out, your genetic material wins the race to the egg. This is exactly what happened in fruit flies and among some ostracods. (Pictured is the Ostrocada known as a mussel shrimp.)
read more: #evolution, #supergiantsperm, #ostrocods, #fossils, #synchrotronxrayholotomography, #imaging, #biology, #madscience, #science, #top
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