所有细胞生物最近的共同祖先如何生活？
Our last common ancestor inhaled hydrogen from underwater volcanoes.
指的是这样一些基因，它们起源于这些基因所在物种的最近的共同祖先的一条基因。
Orthology describes genes in different species that derive from a single ancestral gene in the last common ancestor of the respective species.
指的是这样一些基因，它们起源于这些基因所在物种的最近的共同祖先的一条基因。
Orthology describes genes in different species that derive from a single ancestral gene in the last common ancestor of the respective species.
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