“…We agree with almost every point offered by Clive et al (2019): neither TRPC2 nor any other gene is a single "gay gene," the field suffers from a limitation in taxon sampling, and their further evidence that the TRPC2 stop codon occurred after the split between Old World and New World monkeys and apes is most welcome. We, too, think loss of TRPC2 function may have resulted in greater variation in SSSB, but we are delighted by their suggested test of that hypothesis: knocking out TRPC2 in a New World species to see if SSSB is increased.…”