Board Thread:Warhammer 40k General Discussion/@comment-64.121.236.162-20140910042956/@comment-8881468-20140920123747

1. the raven guard have a primarch, they are no unknown legion, his name is corax

2. the legion of the damned were once a chapter of astartes called "fire hawks"

3. read "deliverance lost"  the alpha legion has access to undiluted primarch gene-seed material

4. "Progenoid Glands - The Progenoid Glands, also known as the Gene-Seed, are the 18th of the 19 genetically-engineered gene-seed organs implanted within an adolescent Space Marine Neophyte to create a new Astartes. Every Space Marine has these organs, one implanted in the neck and another in the chest. The organs hormonally respond to the presence of the other Astartes gene-seed implants in the body by creating germ cells with DNA identical to that of those implants through a process very similar to cellular mitosis. These germ cells grow and are stored in the Progenoid organs, much like sperm cells or egg cells are stored in the testes and ovaries of normal men and women. When properly cultured by the Apothecaries of a Space Marine Chapter, these germ cells can be gestated into each of the 19 gene-seed organs needed to create a new Space Marine. Thus, for most Astartes, their Progenoid Glands represent the only form of reproduction they will ever know, though the DNA passed on will be that of their Primarch, not their own. Mature Progenoid organs can be removed and new gene-seed implants artificially cultured from them. This is the only way new implants can be created, so a Chapter depends upon its existing Space Marines to create other Space Marines. Five standard years after implantation, the Progenoid Gland in the neck contains mature gene-seed and may be removed and its germ cells harvested, while the larger chest Progenoid is not considered ready for harvesting until 10 standard years have passed. The harvesting is normally done after an Astartes' death by an Apothecary, who carries a special attachment on the mobile medical field kit he carries on his arm known as a Narthecium. This attachment is called a Reductor and it is specifically used to extract both Progenoid Glands from the body of a slain Astartes so that his gene-seed can be used to replace the Chapter's loss, the only form of true immortality that Astartes will ever know."

neither of those glands is removed until a marine is dead, and for the removal, you need an untainted body.. there are many ways in which to kill off a marine that will make his gene-seed useless or simply lost.

4. eye of terror and maelstrom m utate the gene-seed,., chaos legions cannot normally boost their numbers