For the vast majority of mammals and birds, sex is decided from the very moment of fertilization. A chromosomal game of chance (such as the famous X and Y chromosomes in humans) seals the destiny of the embryo. However, in the world of reptiles, nature decided to try a radically different strategy. In many species of sea turtles and crocodiles, sex is not written in their genes. It depends, literally, on the temperature of the sand or the litter…
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For the vast majority of mammals and birds, sex is decided from the very moment of fertilization. A chromosomal game of chance (such as the famous X and Y chromosomes in humans) seals the destiny of the embryo. However, in the world of reptiles, nature decided to try a radically different strategy. In many species of sea turtles and crocodiles, sex is not written in their genes. It depends, literally, on the temperature of the sand or the litter…