Originally posted by dadudemon
I know what you're talking about. what would we call that..poly-genic expression? Genomic resonance? Macro-genic expression? Genic Jolism? (The last one is probably the best description, imo.)
I am sure a geneticist already has a word for what it is, but I've never run across it in my studies.
I think you're referring to epistasis (thank you high-school bio). Pleiotropy causes problems in exactly the opposite way.