3 ms·

Any known ring species where (A + B cannot breed OR B + C cannot breed) AND A + B can breed? Assume not possible?

• garmaine 7y ago
  You are asking for both A&B and !(A&B)?
• skrebbel 7y ago
  That'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 ago
    Still not exciting. I think we are looking for non transitivity: A+B & B+C but !A+C
    • irishsultan 7y ago
      That's exactly what a ring species is.
  • ethiclub 7y ago
    Thanks for fixing. Yes that was the intended question.