科学与环境

Fish prove every pregnancy is a battle: Unexpected evidence for the food fight between mothers and babies

来源: Phys.org - latest science and technology news stories · 发布于

Fish prove every pregnancy is a battle: Unexpected evidence for the food fight between mothers and babies
来源: Phys.org - latest science and technology news stories

Left to their own devices, babies in the womb would suck their mothers dry. A developing baby benefits from taking as many essential nutrients as possible, but evolutionary theory predicts that to survive pregnancy, mothers need to keep some of these nutrients for themselves.

Left to their own devices, babies in the womb would suck their mothers dry. A developing baby benefits from taking as many essential nutrients as possible, but evolutionary theory predicts that to survive pregnancy, mothers need to keep some of these nutrients for themselves.

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Colorful fish reveal how species stay distinct despite interbreeding
科学与环境

Colorful fish reveal how species stay distinct despite interbreeding

Vividly colored fish dwelling at the bottom of shallow Midwestern streams may help biologists understand the evolutionary mechanisms by which species remain distinct despite their similarities and overlapping ranges. Orangethroat and rainbow darters regularly interbreed where the

Phys.org - latest science and technology news stories ·