If it’s true that 25% of women are reliably orgasmic, 50% are occasionally orgasmic, and 25% aren’t orgasmic, this suggests a single gene, but that would be surprising.
I think those figures are from Elizabeth Lloyd. They appear to represent figures for penis-caused orgasms.
“In fact, the majority of women reach orgasm through methods other than PVI, usually by direct clitoral stimulation”
25-50-25 doesn’t suggest a single gene very strongly. A gene can have any frequency—while practically any combination of genes could easily generate a bell-shaped curve.
I think those figures are from Elizabeth Lloyd. They appear to represent figures for penis-caused orgasms.
“In fact, the majority of women reach orgasm through methods other than PVI, usually by direct clitoral stimulation”
http://findarticles.com/p/articles/mi_m2372/is_1_44/ai_n27219096/
25-50-25 doesn’t suggest a single gene very strongly. A gene can have any frequency—while practically any combination of genes could easily generate a bell-shaped curve.