Abbott, PhD, a professor of Child, Youth, and Family Studies at the University of Nebraska, calls the “hypothetical evidence” for genetic determinism of homosexuality” both “overstated” and “overrated.” UNITED STATES, Aug() – Genes, environment, and self-agency determine human behavior says an expert on behavioral genetics, who also says that homosexual politics and not good science is behind the search for the “gay” gene.ĭouglas A.