Examlex
A wealth of earlier studies reported __________ in midlife.
Isolating Mechanisms
Biological features or behaviors that prevent species from interbreeding, thus maintaining species boundaries and genetic integrity.
Prezygotic
Referring to mechanisms that prevent fertilization or mating between species, such as geographical separation or timing differences in mating.
Postzygotic
Referring to events that occur after the formation of a zygote, affecting hybrid viability or fertility.
Phyletic Gradualism
Phyletic gradualism is an evolutionary model proposing that species evolve through gradual changes of traits over long periods of time.
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