Can the propensity to commit violence including sexual violence be caused by biological, environmental or a combination of both factors?
There is a book written by randy Thornhill titled, the biological bases of sexual coercion. There even was a newsweek article titled, can we blame our bad behavior on stone age genes? Exploring randy thornhills rape gene theory in the book. I believe that certain traits are inherited. Things like temperament and personality are about 60 percent inherited/hereditary. I think patriarchy does influence male behavior, and I think the root of all misogyny is due to males not caring about women's suffering. With regard to the rape gene theory, I do think things like internal self regulation, or impulse control is influenced by genes.
I will suggest here a book titled, determined: a science of life without free will by neuroscientist Robert sapolsky, for those interested in learning about how biology influences thought and behavior.