currentsinbiology:

Turtle Embryos May Play A Role In Whether They Become Male Or Female

Before turtles are hatched — when they’re just tiny embryos inside their eggs — they may be able to influence whether they will become male or female, according to a study in China. And this could help protect them from the effects of climate change.

Scientists have known that for many reptiles, sex is determined by the temperature an embryo experiences as it grows. In some turtle species, for example, slightly higher temperatures cause the embryo to become female and lower temperatures cause the embryo to become male.

“perhaps the embryos of reptiles could move around within the egg because it might be a little bit warmer at one end of the egg than the other,”

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