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Female-dependent transmission of paternal mtDNA is a shared feature of bivalve species with doubly uniparental inheritance (DUI) of mitochondrial DNA

机译：父系线粒体DNA的女性依赖性传播是双壳类物种的共同特征，线粒体DNA具有双重单亲遗传（DUI）

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摘要

Several species from a number of bivalve molluscan families are known to have a paternally transmitted mitochondrial genome, along with the standard maternally transmitted one. The main characteristic of the phenomenon, known as doubly uniparental inheritance (DUI), is the coupling of sex and mtDNA inheritance: males receive both genomes but transmit only the paternal to their progeny; females either do not have the paternal genome or, if they do, they do not transmit it to their progeny. In the families Mytilidae and Veneridae, both of which have DUI, a female individual is either female-biased (it produces only, or nearly so, female progeny), male-biased (it produces mainly male progeny) or non-biased (it produces both genders in intermediate frequencies). Here we present evidence for a same pattern in the freshwater mussel, Unio delphinus (Unionidae). These results suggest that the maternal control of whether a fertilized egg will develop into a male or a female individual (and the associated feature of whether it will inherited or not inherit the paternal mtDNA) is a general characteristic of species with DUI.
机译：已知许多双壳软体动物家族中的几种具有父本传播的线粒体基因组，以及标准的母本传播的基因组。这种现象的主要特征，称为双单亲遗传（DUI），是性别和mtDNA遗传的耦合：雄性接受两个基因组，但仅传给其后代。雌性没有父系基因组，或者如果没有，则不会将其传给后代。在Mytilidae和Veneridae都有DUI的家庭中，女性个体是女性偏见的（仅产生或几乎产生女性后代），男性偏见的（主要产生雄性后代）或非偏见的（个体产生）。在中频产生两种性别）。在这里，我们提供淡水贻贝Unio delphinus（Unionidae）中相同模式的证据。这些结果表明，受精卵是发育成雄性还是雌性的母体控制（以及其是否会遗传父系mtDNA的相关特征）是DUI物种的普遍特征。

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