>>3098641(lb)
Rh- often have an extra rib and and extra vertebrae. Is Eve a gene splice from an Rh- to be a compatible breeding partner?
https://www.gotquestions.org/Adams-rib.html
RH+ more iron and oxygen in the blood. RH- have more copper and transport more CO2. (The CO2 is probably why RH- are resistant to so many RH+ diseases.)
In WWII US aircraft carriers flooded the lower hangers with CO2 prior to combat. Japanese Imperial Navy didn't. Japanese Navy blew up.
Your lower decks are flooded with pneumococcal disease resistance. (CO2). :) Doesn't mean you won't get pneumonia, just less likely. You may also be resistant to HIV, ebola, bacterium, and immune to malaria. That shit just won't stick to your blood.
I'm Rh- too. Spouse Rh+. First kid was ok. Turned out Rh+. With the second kid she developed severe toxemia, started to convert as if Rh neg. Kid came out Rh+ too. But her body started to reject and she got those shots too, as Rh-. …aliens… We're probably just more Neanderthal…