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I'm not sure there is a strict definition of species. Take a ring species where A and B can interbreed and B and C can interbreed but A and C cannot. If some
by SkyBelow 7y ago
I'm not sure there is a strict definition of species. Take a ring species where A and B can interbreed and B and C can interbreed but A and C cannot. If some event kills all the B's, then you have two species instead of one. That you can make new species by killing only seems quite odd.
- CWuestefeld 7y ago"Ring species" are a fascinating thing, they really turn out to be a litmus test for testing notions of speciation. I think it turns out just that "species" is just a human construct. It's not something hard-and-fast that nature hews to. It's nothing but a construct we use for convenience in our drive for labels.
- toasterlovin 7y agoI think colors are a good analogy. Colors exist and are distinct at certain distances from each other, but things start to get blurry the closer two colors are to each other. For instance, is turquoise blue? Is it green? It's kinda both. Same with organisms and populations. The farther away (evolutionarily speaking) two populations of interbreeding organisms are, the easier it is to distinguish them into different species. The closer they are, the more things start to look like turquoise.