I understand how the Mendelian magic genetics are proposed to work in HPMOR, and I actually really like the idea of the Mundane gene complex. I think the thing that was getting me was that I took the explanation to be a guess at how magical ability actually works in the Harry Potter universe, which I found highly improbable, as opposed to an explanation as to how they (possibly) work in the HPMOR universe as theorized by Harry, which is absolutely probable because, of course, this is a fan fiction and doesn’t have to be canon. Ultimately my original comment was meant to say that while this theory could work in HPMOR, I don’t believe it is true in canon (although the theory is likely and I can’t prove that it isn’t true).
Rowling once stated in an interview that magical genes were “strongly dominant” in which case two marrying Muggleborns would constantly be throwing non-magical offspring. There are entire papers trying to reconstruct how magical genes could realistically work instead, albeit I think they tend to come up with answers that make bad fiction compared to HPMOR. Eg https://pmc.ncbi.nlm.nih.gov/articles/PMC2151141/. But ultimately it is a truth of the final origins of the observed phenomena of Harry Potter that Rowling did not understand genes and was running on Folk Heredity.
I understand how the Mendelian magic genetics are proposed to work in HPMOR, and I actually really like the idea of the Mundane gene complex. I think the thing that was getting me was that I took the explanation to be a guess at how magical ability actually works in the Harry Potter universe, which I found highly improbable, as opposed to an explanation as to how they (possibly) work in the HPMOR universe as theorized by Harry, which is absolutely probable because, of course, this is a fan fiction and doesn’t have to be canon. Ultimately my original comment was meant to say that while this theory could work in HPMOR, I don’t believe it is true in canon (although the theory is likely and I can’t prove that it isn’t true).
Rowling once stated in an interview that magical genes were “strongly dominant” in which case two marrying Muggleborns would constantly be throwing non-magical offspring. There are entire papers trying to reconstruct how magical genes could realistically work instead, albeit I think they tend to come up with answers that make bad fiction compared to HPMOR. Eg https://pmc.ncbi.nlm.nih.gov/articles/PMC2151141/. But ultimately it is a truth of the final origins of the observed phenomena of Harry Potter that Rowling did not understand genes and was running on Folk Heredity.