Summary
In some turtles, hatchling sex depends on incubation temperature. Even within one nest, a few degrees can produce a very different next generation.
A turtle nest looks like an ordinary patch of sand. But temperature inside that sand can trigger a surprising decision mechanism for hatchlings.\n\nIn some species, sex is determined less by genes and more by incubation temperature. As eggs develop under warmer or cooler conditions, embryonic pathways can shift toward different outcomes.\n\nSurprising detail: this becomes delicate under large-scale temperature changes like climate warming. If nests stay hotter, one sex can dominate and population balance can wobble.\n\nThis matters because conservation isn’t just counting nests. Shade, sand color, location, and temperature management can become the details that decide a species’ future.
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