Board Thread:Warhammer 40k General Discussion/@comment-7699236-20150618150629/@comment-5880884-20150618155154

It is stated in the source somewhere that female bodies are unable to take in the fragment of the Emperor's genome. It was not possible even with all the advanced science and gene-wrights of the Great Crusade era. Imperium's genetic engineering science has fallen from that era, hence it would not be possible in wh40k.