eg: at some point there were humans who, genetically were 100% neanderthal and other humans who were genetically 100% not.
The first pair that mated had offspring with a 50-50 mixture of more or less random neanderthal and "not-neanderthal " genes (although even that is a simplification as the two parents would have had many common human genetic features).
Over the course of seven thousand years of side by side interbreeding and co-habitation there would have been individuals with ranging from 0% neanderthal to 0% "not neanderthal".
A further complication is the relationship between "features" (visible physical characteristics) and "percentage neanderthal" .. an individual may have almost no neanderthal genetics whatsoever save for that one gene that strongly codes for a "neanderthal forehead".
If there was some unique "neanderthal feature" that was clearly recognisable as neanderthal and only expressed itself within people that had some specific "neanderthal gene" ..
Then no, there wouldn't be people walking about with that specifically "neanderthal feature" unless they also had that specific "neanderthal gene".
The problem is that genetic expression really isn't this cut and dried, nor is the boxing up of humans as "this" or "that".
eg: at some point there were humans who, genetically were 100% neanderthal and other humans who were genetically 100% not.
The first pair that mated had offspring with a 50-50 mixture of more or less random neanderthal and "not-neanderthal " genes (although even that is a simplification as the two parents would have had many common human genetic features).
Over the course of seven thousand years of side by side interbreeding and co-habitation there would have been individuals with ranging from 0% neanderthal to 0% "not neanderthal".
A further complication is the relationship between "features" (visible physical characteristics) and "percentage neanderthal" .. an individual may have almost no neanderthal genetics whatsoever save for that one gene that strongly codes for a "neanderthal forehead".
If there was some unique "neanderthal feature" that was clearly recognisable as neanderthal and only expressed itself within people that had some specific "neanderthal gene" ..
Then no, there wouldn't be people walking about with that specifically "neanderthal feature" unless they also had that specific "neanderthal gene".
The problem is that genetic expression really isn't this cut and dried, nor is the boxing up of humans as "this" or "that".