Sperm speed cooperation



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Pizzari T, Foster KR. The cells can then draft, Lance Armstrong-style, moving faster than they could alone thanks to more "engine" power from the cluster, said study co-author Heidi Fisher, an evolutionary geneticist at Harvard University's Hoekstra Laboratory. Log—log plot of the average velocity VSL versus aggregate size for various values of propulsion velocity v 0. Perhaps the key driver for increased motility, however, is sperm competition between the ejaculates of different males. Biological Sciences are provided here courtesy of The Royal Society. Copyright notice and Disclaimer.
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To dream that you have been stabbed signifies your struggle with power. A situation or relationship is unstable. In short, sexual harassment sparks the evolution of female plates that differ from the usual, which in turn triggers shifts in the shape of male claspers, in an evolutionary tango that gives rise to whole new species and unexpected variety. Perhaps you are angry with someone or at something as in the metaphor "letting out steam".
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