CONTRASTING PATTERNS OF MOLECULAR EVOLUTION IN METAZOAN GERM LINE GENES

Abstract Background Germ lines are the cell lineages that give rise to the sperm and eggs in animals.The germ lines first arise from primordial germ cells (PGCs) during embryogenesis: these form from either a presumed derived mode of preformed germ plasm (inheritance) or from an ancestral mechanism of inductive cell-cell signalling (induction).Nume

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