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There's actually LESS genetic diversity in a single breeding population than in two separate ones. When you have two, they can drift in different directions or
by onychomys 2y ago
There's actually LESS genetic diversity in a single breeding population than in two separate ones. When you have two, they can drift in different directions or be subject to different selection pressures. With just one, all of that stuff is swamped out.
- kjkjadksj 2y agoWell they can drift until they no longer are capable of interbreeding. Now you have two species with small populations lacking diversity.
- Karellen 2y agoThat takes a really long time though. Most domestic dogs can still breed with wild wolves after ~14,000 years of being pretty well separated by humans, and after some fairly substantial phenotypic shifts.