Genetic variants underlying male bisexual behavior, risk-taking linked to more children, study shows
Because same-sex sexual behavior does not result in offspring, evolutionary biologists have long wondered how the genes associated with this behavior have persisted in the human genome, and whether ...
But the researchers cautioned that the work could not shed much light on sexual orientation in humans. By Carl Zimmer In more than 1,500 animal species, from crickets and sea urchins to bottlenose ...
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Same-sex sexual ...
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