I'm involved in a home brew where my DM has allowed me to play as a combination of half-orc and half-elf. My character has the stats of a half-orc that simply has a slightly increased lifespan and some cosmetics of an elf, but that is entirely irrelevant to my question.
I write expanded backstories for a few characters that I've played for the sheer joy of writing but I'd like to keep things as lore-accurate as possible for these tales. I understand that an orc's genes are dominate in the child resulting in it simply being considered a Half-Orc for PC creation. However, this is just a story I'm writing outside of the game.
I've had people tell me to look back at the 1e monster manual (which I do not have) to see that orcs and elves cannot mate, but I wonder if this is just for the sake of preventing PCs being made as such.
In the general lore from any edition (i.e. setting neutral), can a male orc impregnate a female elf, or is there some genetic reason that an elf simply cannot birth the child of an orc?
Again, I don't need anyone to tell me that as a PC, this is not a thing. I just want to understand the lore of these races as such.