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Temperature-dependent sex determination
National Center for Biotechnology InformationU. By agreement with the publisher, this book is accessible by the search feature, but cannot be browsed. The next phase can be either male or female, depending on the animal's position in the mound.
However, there is evidence that during climactic extremes, changes temperature dependent sex determination the sex determining mechanism itself to GSD are selected for, particularly in the highly-mutable turtles. It is the most popular and most studied type of environmental sex determination ESD. The highlands are colder with a higher magnitude of annual temperature fluctuation and a shorter activity season, delaying maturity, thus GSD is favored so sex ratios are not skewed.