Single girls have always grumbled that good-looking men are difficult to find. But science may have just proved them right – because beautiful women are more likely to have daughters, says to a study. This is because parents tend to pass on genes that determine looks.Dr Satoshi Kanazawa, of the London School of Economics, analysed data from a survey of 17,000 babies born in Britain in March 1958 and tracked them throughout their lives. At the age of seven, their attractiveness was rated by their teachers.
When they reached 45, they were asked about the gender of any children they had. Those rated as attractive were equally likely to have a son or daughter as their first child – but the unattractive sorts were more likely to have a son. A previous study of 2,000 Americans suggested that women are becoming more beautiful over the generations because attractive women have more children than those who are not so attractive – and a higher proportion of their offspring are girls.
Dr Kanazawa believes beauty, is of more benefit to a woman than a man, and so it pays for attractive women to have daughters. But couples blessed with strength and aggression rather than looks are better off having boys, as these characteristics are of more use to males.