Examlex
The six universal facial expressions of emotion are:
Pre-mating Isolation
Mechanisms that prevent mating or fertilization between potential breeding pairs, contributing to species separation and evolution.
Allopatric
Referring to populations of a species that are geographically separated, leading to genetic divergence and potentially speciation.
Allopatric Speciation
A mode of speciation occurring when biological populations of the same species become isolated from each other to an extent that prevents or interferes with genetic interchange.
Parapatric Speciation
A mode of speciation in which new species evolve in adjacent or overlapping geographic areas, often due to differences in habitat or environmental pressures.
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