Board Thread:Warhammer 40k General Discussion/@comment-69.143.134.163-20150419161351/@comment-8881468-20150705103533

T42 wrote: ZiXIS wrote: Mutation does not change the creature's gender. It can add some additional limbs or organs, but the gender does not change. Tell that to the Emperor's Children and other Slaaneshii marines that have uni-boobs, womanly waists, and so on.

man boobs are possible through diet and training or might be granted as a boon, however: if we go into deliverance lost, corax is told by emps, that he only has 17 brothers left, while he is number 19, 2 are dead. we are also aware that chaos, in none of the primarchs did seem to have intentionally done anything to them. the angel has his wings but do we know who did that and why..? nope and it has not changed his gender.

it is also said in several sources, that empi met all of his sons and that all fought in the great crusade for emps.

source: index astartes 1, rites of iniciation,    ultramarines codex 2nd edition

from the horus heresy chapbook "20 statues of the Primarchs were erected in the Imperial Palace on Terra. By the time of the Horus Heresy, plinths II and XI "...had been vacant for a long time. No-one ever spoke of those two absent brothers [and] their separate tragedies."[9]"