| happydolphin said: Yes, two populations would separately evolve and as such would develop an inability to cross-breed, making them more and more "true" species. Don't counter this because your article said that itself. I think they used the word "proper" species. My issue is when does this happen? When does A become B which in turn becomes C, whereby C can no longer mate with A? Because we know (per the article) that the speciation is a gradual process that takes time. So what mutation causes this incompatibility, and what happens with B that can still mate with C and with A, or is there a threshold at which time the mutation is just too much and it creates an incompatibility, but if that's the case where is the partner in procreation? I think you just got powned and are out of articles, so for the sake of it, put it in your pipe and smoke the hell out of it. You too Runa. EDIT: It's funny you mention that the globalchange article was for kids, I kind of felt like it was all so basic. |
Far as I've read there is no threshold between group A and C, there is only a continuum. So let's say that a true species 100% of them cannot mate with another true species. WHile they are being differentiated because of one reason or another they can be anywhere within that range from everyone being able to procreate to noone between two groups being able to procreate, and then they are truly different species. The point to make though is that there is no point at which someone from a group turns into a different species by themself and therefore can't find a mate. Groups speciate together because it requires many many generations while separation is maintained, so at no point will you get someone simply unable to procreate because they've basically "evolved" by themselves. And if you do that's just a genetic defect that obviously won't be included in the gene pool further.
Yes it's a complex system, but to me that's just the watch maker analogy which I get so tired of hearing because with time we've come to understand many things that at first seemed too complicated and were simply chalked up to god, and this seems like the exact same thing.
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