Dr George Fieldman, a psychologist and lecturer from Buckinghamshire Chilterns University College, said the results were "very interesting".

BBC: NEWS | Health | Partner choice 'shaped by father'

Dr George Fieldman, principal lecturer in psychology at Buckingham New University, said there could be evolutionary benefits to possessing the 334 variant.

BBC: Commitment phobes can blame genes

Dr George Fieldman, a London-based psychotherapist, said the findings were interesting.

BBC: Ovulation hormones make women 'choose clingy clothes'