Its not and they know it. Even with identical twins the correlation is no more than then the flip of a coin whereas intelligence approaches 70% correlation and I guarantee you’d never get a Democrat to embrace that. Its no more genetic than adultery. :-)
“Its no more genetic than adultery. :-)”
Darwinists are now arguing that we “evolved” to have several sex partners. We are no better than animals after all, so why have limits?