To what does the term "mosaic pattern" refer in terms of evolution?

Question

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The term "mosaic pattern" in terms of evolution refers to different features developing at different times in different species, resulting in a "mosaic" of traits among the different lineages. This can be seen in the evolution of hominins, for example, where bipedalism may have evolved before the expansion of brain size, resulting in a mosaic pattern of traits among different hominin species.

To What Does the Term "Mosaic Pattern" Refer in Terms