Dictionary of Human Evolution and Biology

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1. a pattern made of numerous small pieces fitted together.

2. in genetics, an individual or cell culture that has two or more cell lines that are genotypically or karyotypically distinct but derived from a single zygote; cf. chimera.

3. in human evolutionary biology, commonly used to refer to specimens such as the archaic hominids that possess features of more than one species.

Cf. mosaic evolution.

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