Board Thread:Warhammer 40k General Discussion/@comment-6078851-20150114163201/@comment-26937526-20150126213330

Over time (40k plus years humans will change to adapt to were they live, to cope with hash conditions or protect themselves from sunlight in particular UV rays. So if 40k was real the people of the Imperium would be very different to each other.

Well it is 40k years into the future so humans whom of have been away from sunlight (E.g. spaceships) would have light skin because there would be no need to protect from harsh U.V rays, and they would need all the sunlight they could get, But if most are form a world like a Feral World (many people world be out in the sun as hunter-gatherers or famers) or a Feudal World (There is likely to be people whom farm in open places) they would have dark skin to protect themselves from sunlight.

About human-Eldar hybrids - Eldar are aliens the DNA is going to be different to human DNA and the baby might not even conceive in the first place, and then if it makes it to full term, and lives though being born, it, I would think have all kinds of birth defects. I do not think Eldar and human DNA is compatible, I mean humans have double helix [shaped] DNA and Eldar I read somewhere had double helix [shaped] DNA.