Genes for asymmetry easily overruled

C.L. Anderson; E. U. Canning; Beth Okamura

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Genes for asymmetry easily overruled

机译：不对称基因容易被否决

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The hermit crab Clibanarius vittatus inhabits empty gastropod shells and is highly asymmetric. I have found that this asymmetry does not depend on initial possession of a shell, but can be lost within a few moults in the absence of shells, suggesting that the morphology has a genetic component but is environmentally regulated. The loss of dependence on shells has been implicated in the evolution of the nearly symmetrical, fully armoured king crabs and coconut crabs from hermit crab ancestors. The first steps of such a transformation may thus have been much easier than previously thought.

机译：寄居蟹Clibanarius vittatus栖息在腹足动物的空壳中，高度不对称。我发现这种不对称性不依赖于最初拥有壳，而是在不存在壳的情况下可能会在几个蜕皮中消失，这表明该形态具有遗传成分，但受环境调控。对寄居蟹祖先近乎对称的，完全铠装的帝王蟹和椰子蟹的进化都与对贝壳的依赖有关。因此，这种转变的第一步可能比以前认为的要容易得多。

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《Nature》 |1998年第6674期|p.345-348|共4页
作者
C.L. Anderson; E. U. Canning; Beth Okamura;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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正文语种 eng
中图分类自然科学总论;
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Genes for asymmetry easily overruled

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