So the no viable offspring rule might not be that good for differentiating species, but that also doesn’t mean that neanderthalers and us were not the same species. The more I read on it, the more I think that we were. Apparently we interbred quite a lot over the millennia.
Is there any way to tell if certain gender-pairs were more common in interspecies mating between sapiens and neanderthals? For example, are we able to tell if the male partner was more or less likely to be sapien or neanderthal?
There are examples of 2 distinct species (with different chromosome count) creating (sometimes) fertile offspring: https://revistapesquisa.fapesp.br/en/when-hybrids-are-fertile-3/
But genetically the neanderthalers were far less different from us than those examples. Apparently all modern humans share 99.9% of DNA and neanderthalers shared 99.7% of that. https://www.livescience.com/archaeology/are-neanderthals-and-homo-sapiens-the-same-species
So the no viable offspring rule might not be that good for differentiating species, but that also doesn’t mean that neanderthalers and us were not the same species. The more I read on it, the more I think that we were. Apparently we interbred quite a lot over the millennia.
Is there any way to tell if certain gender-pairs were more common in interspecies mating between sapiens and neanderthals? For example, are we able to tell if the male partner was more or less likely to be sapien or neanderthal?