Which of these is NOT a condition for speciation?

Speciation is the process by which new distinct species arise, and certain conditions facilitate this process. One crucial aspect of speciation is the isolation of populations, which prevents gene flow between groups and allows them to evolve independently. Genetic variation within populations is also essential, as it provides the raw material for natural selection and adaptation to different environments or niches. Moreover, selective pressures, such as predation, competition, or environmental changes, can lead to differential survival and reproduction among individuals in the populations, promoting divergence.

Stable environmental conditions are not a necessary prerequisite for speciation. While stable conditions can lead to the establishment of adaptive strategies within a species, speciation often occurs in changing environments where populations adapt to new challenges and opportunities. Therefore, the correct response highlights that stable environmental conditions do not directly contribute to the evolutionary mechanisms driving speciation.