The ontogeny of epiphyllous microsporangia Ginkgo indicated that the microsporophyll in Ginkgo is of phyllome origin.Possibly, the epiphyllous microsporangia is a peculiar chimera.
叶生小孢子的个体发生,表明的小孢子叶有叶来源的质,叶生小孢子可能是特的嵌合体。
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This process of adding more repeats is called repeat expansion and it happens way more in the production of sperm than of eggs, so both anticipation and new disease alleles generally happens when the father is the affected parent.
这种序列重复增加称为重复序列扩增,精子产生时发生异常比卵子高,因此当父亲为受累个体时,会发生早现现象和新疾病等位基因。
He who believes that some ancient form was transformed suddenly through an internal force or tendency into, for instance, one furnished with wings, will be almost compelled to assume, in opposition to all analogy, that many individuals varied simultaneously.
谁相信某种古老形式是通过一种内在力量或倾向突然转变为, 例如,一个带有翅膀人,他将乎被迫假设, 与所有类比相反, 许多个体同时发生变化。