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Such categories are only an approximation of reality to help with classification. There is stuff like ring species [1] for example or species complex [2]. [1]:
by est31 7y ago
Such categories are only an approximation of reality to help with classification. There is stuff like ring species [1] for example or species complex [2].
[1]: https://en.wikipedia.org/wiki/Ring_species https://en.wikipedia.org/wiki/Ring_species
[2]: https://en.wikipedia.org/wiki/Species_complex https://en.wikipedia.org/wiki/Species_complex
- peter_retief 7y agoVery helpful links, I didn't know the term ring species
- Doubl 7y agoI thought that unlike what was previously thought, there are no known examples of ring species.
- ethiclub 7y agoAny known ring species where (A + B cannot breed OR B + C cannot breed) AND A + B can breed? Assume not possible?
- garmaine 7y agoYou are asking for both A&B and !(A&B)?
- skrebbel 7y agoThat's logically equivalent to (A + B can breed) AND (B + C cannot breed), not a very exciting question. Did you mean AND (A + C can breed)?
- quickthrower2 7y agoStill not exciting. I think we are looking for non transitivity: A+B & B+C but !A+C
- irishsultan 7y agoThat's exactly what a ring species is.
- ethiclub 7y agoThanks for fixing. Yes that was the intended question.