10 Jul '11, 2pm

Sex May Have Resulted From Infections: University of Indiana researchers found evidence that sexual reproduction...

Sex May Have Resulted From Infections: University of Indiana researchers found evidence that sexual reproduction...

University of Indiana researchers found evidence that sexual reproduction may have begun as a way to avoid infection and death from parasites. Asexual reproduction is more efficient because it does not require a partner, but it also results in limited genetic variation. If a species has limited genetic variation, a parasitic species than can infect one organism might be able to infect the whole species, resulting in extinction. Sexual reproduction inputs different genes into the new generation with each cycle. New genetic material in a host generally helps it prevent attacks and infection from parasites. The IU researchers tested the Red Queen hypothesis which is intended to explain the advantage of sexual reproduction, and the constant and sometimes deadly competition between species. One of the lead researchers explained, “We were able to conduct a controlled test showin...

Full article: http://www.care2.com/greenliving/sex-may-have-resulted-fr...

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