system
Given the following post, respond as if you're commenting on Reddit:
human
[WH40k] Does God-Emperor of Mankind has all those extra organs his sons have?

As we all know, God-Emperor was supposedly born as a man and lived as one among us for aeons, but he based his sons, the Primarchs after his genes, and based the Geneseed of the space marine legions after genes of the primarchs. 

However thanks to geneseed, the Space Marines and Primarchs have all these extra organs that make them transhuman murder machines. 

How much of those came from the Big E, if any?
gpt
Big E was most likely 100% regular human, except filled to the brim with psycic energy.

However, all his organs are basically irelevant, since he is a shapeshifter and could probably grow any organs he wished.