Question

What would we predict the fate of a hybrid zone where the parental fitness was much higher than the hybrid fitness?

Answer 1

The hybrid zone will be brief and rather small.

What is hybrid zone?

A hybrid zone is a place where two species that are closely related to one another continue to cohabit and reproduce, resulting in hybrids. The hybrid zone may change over time depending on the hybrids' degree of fitness and reproductive obstacles. Genetically varied groups congregate, mate, and give birth in hybrid zones, where at least some of the offspring are of mixed ancestry.

Historically, the main focus has been on understanding the origin, behavior, and ultimate fate of hybrid zones. Genetically diverse groups interact, mate, and give birth to children who have a mixed ancestry in hybrid zones. By balancing admixture resistance and diffusion, it is thought that the majority of hybrid zones are kept under check.

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