Board Thread:Warhammer 40k General Discussion/@comment-7699236-20130626164907/@comment-1583177-20130626173901

Well lets look into it from the start from a gentic point of view...

Being so far from each other genetically, there are 2 outcomes to the merging of eldar and human genetics via miosis:

1. If we presume that the Eldar are simply a subspecies of homo Sapien, they're is a chance that the child will be born, however he would be completely infertile and have a large amount of genetic deviance from the baseline human DNA.

2: If we presume that Eldar is a totally different species, then the result would be similar to having a human mate with an animal (i.e: it wouldn't happen) and you wouldnt have a halfbreed youth.

Now, lets assume its theory 1 and that the Eldar baseline DNA is still in the homo sapiens family, the youth as stated would have a large amount of genetic deviance from the baseline DNA (the DNA structure used by the geneticists to key to the seed and turn a youth into an astartes in the first place), placing a gene seed inside one would result in a similar result to trying to turn a female or an ogryn into a space marine, meaning that the seed wont be able to bond with the host, would reject it and the youth would die.

So sadly, its impossible.