Veteran actress Anjelica Huston blames the male genetic make-up as the reason her ex-lover JACK NICHOLSON strayed with a younger woman.

The ROYAL TENENBAUMS star ended her 17-year relationship with Nicholson in 1989 after learning of his 26-year-old mistress Rebecca Broussard's pregnancy.

And Huston simply attributes Nicholson's behaviour to the male obsession with youth.

She says, "Men are largely drawn to women who look young. Genetically, they are conditioned to like women who are cute and sweet. Like puppies."

Nicholson, now 68, has since been romantically linked to svelte actress Lara Flynn Boyle, 35, and model Kate Moss, 30.