By Charles Q. Choi, Live Science
Contributor | November 23, 2016 09:47am ET
Male mosquitofish with bigger
genitals are typically best at coercing females into the "sack," but
now researchers have found that females that are not interested in such pushy
lovers grow bigger brains to fight back.
Having more brain power may give
the females the smarts they need to find clever ways of avoiding male assaults,
researchers said.
This is just one example of the arms
race that takes place between the sexes. The conflict arises in the animal
kingdom because of the different strategies that males and females often take
when it comes to continuing their genetic legacies. Females of most species are
typically seen as choosy about their mates, because they often have to pay a
high biological price for bearing offspring. On the other hand, sex usually
exacts a low biological toll on males, so an approach that they frequently
pursue is to mate as often as possible.
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