Board Thread:Warhammer 40k General Discussion/@comment-6078851-20130130174042/@comment-7186329-20130316175207

Exatctly what i mean. Yes an attempt of the Imperium to modify the gene seed lead to the 21st cursed founding. That shows two things, first that the gene seed can be altered and second that the Imperium does not have enought knowledge to do that successfully. You are mistaken to compare the imperium to a renegade legion of space marines, with knowledge of the warp, a primarch at their side and 10 000 years of time to perform experiments. They could very well succeed where The Imperium failed.

We do not know the exact properties of a gene seed directly from The Emperor, the Thousand sons had a majority of psykers because Magnus was a psyker himself. That is one example ,which is not enought to claim with certainty that a psyker primarch leads to psyker marines. It is a completely different discussion if all humans have latent psyker abilities ,activated by psyker primarch gene seed or that the gene seed itselff leads to psionic abilities.

Two things are known. The Grey Knights are psykers before they become astartes, as humans. And that a gene seed originating directly from The Emperor is superior to that of a primarch. What is not known are two things, amongst the rest, first is it necessary for someone who is implanted with the organs made from said gene seed need to be a psyker, and if he is does that enhance their abilities. The second one is can a minority of humans, who are psykers survive the transformation in the first place. Again i repeat that one in a million becomes a GK, therefore that is plausible.