Polygenic:
But many disorders are polygenic – that is, caused by variations in many different genes that each have a and less clear-cut effect. Geneticists attempt to work out the overall impact of thousands of gene variants by sequencing people’s DNA and calculating so-called polygenic risk scores, but there are big questions about how accurate or useful these are. [“Controversial DNA screening technique used for at least one pregnancy,” Michael Le Page, NewScientist (22 November 2019, from print-only version)]
