As someone up there noted, the complication you may be thinking of is due to Rh factor incompatibility; I actually know a family where the mom’s firstborn child wound up slightly developmentally disabled because of blood mingling at birth and the Rh didn’t match.
> Did crossbreeding with other than O blood types cause extinction of neanderthal female species
That’s actually something that didn’t cross my tiny little mind — that Type O might be another legacy of Neandertal. Now that you bring it up, Captain Obvious just smacked me in the back of the head. ;’)
“That’s actually something that didn’t cross my tiny little mind — that Type O might be another legacy of Neandertal. Now that you bring it up, Captain Obvious just smacked me in the back of the head. ;’)”
Geez. does that mean, as I am O negative, that I am a direct descendant of Neanderthals?
thinking of type O as a legacy, ping to Post 7 map of type O, consider the expanding-earth theory, and voila - neantherthals in africa, all the way up to the Artic Regions.
Thanks, FRiend, for helping me learn :)
best regards, blu