This surprised me enough to scroll back up and look at the reconstruction again, because it looks the woman definitely has (what I would think of as) a chin--which supports the "not so stark in real life" part. But if the skulls are that different, how would a Neanderthal face end up looking so similar to a human's? Did they have cartilage or something that doesn't get preserved in these skeletal remains?
This is a false implication, it’s possible that Neanderthal X chromosome just doesn’t “play nice” with human dna, and can’t result in fertile offspring. Admittedly I have not read the sources you recommend, so maybe they address this?
No, but it is an overconfident assertion.
Maybe all neanderthalis x sapiens were the results of rape. Maybe the fetuses were only viable from the n. sperm to s. eggs. Maybe something else.
All are possible.
What would be stronger evidence for an absence of neanderthal mothers among neanderthal/sapiens hybrid children would be a lack of neanderthal mitochondrial RNA in modern populations. This would point in the direction of no neanderthal grandmothers for us modern humans, though I'd be reluctant to present this as solid evidence. Maybe sapiens mitochondrial RNA is just better and there's selective pressure against neanderthal mitochondrial RNA.
None of this is to suggest that all neanderthal/sapiens couplings were loving affectionate parents. Just that the absence of neanderthal DNA on modern X chromosomes means nothing in this context.
They know the relative muscular thickness for each area as to compile a likeness. Is it 100% a look-a-like? Probably not, but the main features and composition should be comparable to the original face.
What did you search for when you tried to verify this yourself?
https://www.youtube.com/watch?v=klxUyd3CgrE
Aside, a similar approach was used in a MacGyver episode nearly 40 years ago ("The Secret of Parker House"):
https://www.imdb.com/title/tt0638792/mediaviewer/rm119321036...
That's quite the assumption, considering most people here would trust HN users here over a google search, understandably.
"Species" and "genus" are human (hey-o) concepts that we impose on the natural world to try and understand it, and ultimately this depends on who you ask.
I guess it can be argued that early archaich humans can barely be considered humans, but neanderthals were close enough to sapiens to interbred.