Female orgasm is genetic

Here is another goofy genetic theory:

After taking into account other factors that could influence orgasm, the scientists estimated that 34 percent of the difficulty women face in reaching orgasm during intercourse is due to genes.

Problems in sexual response during masturbation seemed to be more genetically influenced than orgasm ability during intercourse. The study found that 45 percent of the difficulty women have in climaxing during masturbation can be attributed to genetic makeup.

The results were similar to those of a study on Australian twins published earlier this year.

And there are 21 different evolutionary theories for how those genes evolved.