It's not that simple, of course, as lead researcher Dr Satoshi Kanazawa explains: "Beautiful parents have more daughters than ugly parents, because physical attractiveness is heritable and because daughters benefit from attractiveness more than sons."
Other recent papers from Dr. Kanazawa, who is a professor of evolutionary psychology at the London School of Economics, include: "Violent Men Have More Sons", ""Big and Tall Parents Have More Sons", and "Engineers Have More Sons, Nurses Have More Daughters".
Hot female engineers were not available for comment.
Beautiful people tend to have girls, say scientists [timesonline.co.uk via kottke]
Dr Satoshi Kanazawa bio, London School of Economics [lse.ac.uk]