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探秘鲇属鱼类性染色体演化:amhr2y 基因的奇妙之旅与频繁 “变身”
经典理论认为,性染色体从常染色体(autosome)演变而来,新的性别决定(Sex-Determining,SD)基因出现后,性染色体最终会通过逐渐的染色体退化变得形态不同,就像哺乳动物的 X 和 Y 染色体那样。 然而,现实却给了这个理论一个 “惊喜”。在动物世界里 ...
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