Re:We don't know which species should be classed as 'human'
by lordnacho on Monday January 11, 2016 @11:44AM
(#10881486)
That's a start, but it's not very satisfying.
- Ring species. A can mate with B, and B with C, but A cannot mate with C
- How do you test it? What about the case where A and B can in molecular terms reproduce (ie the sperm and egg make a viable fetus by IVF) but they can't come together naturally because there's some behavioural issue (different mating rituals)?
- What about things that don't have sexual reproduction?
- Ring species. A can mate with B, and B with C, but A cannot mate with C
- How do you test it? What about the case where A and B can in molecular terms reproduce (ie the sperm and egg make a viable fetus by IVF) but they can't come together naturally because there's some behavioural issue (different mating rituals)?
- What about things that don't have sexual reproduction?