Tuesday night I read an article about how certain fish can reproduce without sex, but that it causes undesirable genetic alterations over time:
Not everyone in the animal kingdom needs to have sex to reproduce, but asexual species tend not to last as long as sexuals because, as the theory goes, asexuals are more susceptible to accumulating harmful mutations over many generations.
To witness this phenomenon without having to get in the water, simply go to what genetic biologists call a “Star Trek Convention”:
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