In 19th century, people began to adopt the term biochemistry in their studies.

daughters than their plainer counterparts, according to a study．

As parents tend to pass on genes that determine looks, this could result in handsome men becoming

rather thin on the ground．2For example, Yasmin Le Bon is signed to the same modelling agency

as daughter Amber, and Jerry Hall's daughters Elizabeth and Georgia Jagger have both taken to the

catwalk．

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．3When 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．4

Dr Kanazawa believes that parents tend to produce children who benefit from their own

features．5So 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．

children than plain ones．

B．Single girls have always complained that good-looking men are difficult to find．

C．Beauty is of more benefit to a woman than a man．

D．At the age of seven, their attractiveness was rated by their teachers．

E．Put another way, the beautiful women were more likely to have daughters．

F．And it may also explain why many models have daughters who follow in their fascinating footsteps．

G．Famously good-looking parents like Tom Cruise and Katie Holmes are more likely to have girls than

uglier couples．