Brainy sons owe intelligence to their mothers
Friday 28 June 1996
Intelligent men owe their brains to their mothers, according to research published today in The Lancet.
Growing evidence shows that several genes which determine intelligence appear to be located on the X chromosome, the one men inherit from their mothers .Any mutation on the X chromosome has more effect on a man than a woman because a woman inherits X chromosomes from both her parents, which tends to dilute the gene's impact.
But a man only has one X chromosome inherited from his mother, which is paired with the much smaller Y chromosomes from his father. Therefore, an intelligence-enhancing X gene has more of a chance of becoming the predominate gene, determining the man's basic intelligence, looks and character. It also works the other way; if the predominate gene is not as strong as it should be, the man is more likely to suffer mental retardation.
Professor Gillian Turner, the author of the study, said: "If the gene is the one that increases intelligence then its full effect will be seen in men, while in women the benefit is less pronounced. This explains why some men are extraordinarily intelligent." She concludes that if a man wants smart sons his best bet is to marry a smart woman.
- 1 President of Argentina adopts Jewish godson to 'stop him turning into a werewolf'
- 2 ALS ice bucket challenge co-founder Corey Griffin drowns, aged 27
- 4 Sir Winston Churchill’s family begged him not to convert to Islam, letter reveals
President of Argentina adopts Jewish godson to 'stop him turning into a werewolf'
Exclusive: Abusers using spyware apps to monitor partners reaches 'epidemic proportions'
UK weather: Warning for more snow and ice as freezing temperatures and gales hit Britain
Stoke-on-Trent becomes first British city to be classified as 'disaster resilient' by the United Nations
AirAsia flight QZ8501 missing: Search for plane carrying 162 passengers from Indonesia to Singapore suspended overnight
British actor Idris Elba cannot star as James Bond because he is black, says shock jock Rush Limbaugh
Millions of Britons struggling to feed themselves and facing malnourishment
Ukip member gets into Christmas spirit with Union Flag plea to Santa 'for our country back'
Germany anti-Islam protests: 17,000 march on Dresden against 'Islamification of the West'
Nigel Farage: Ukip leader named 'Briton of the year' by The Times
Immigrants make UK racist, says Ukip councillor Trevor Shonk
£45000 - £55000 per annum: Recruitment Genius: This is an exciting opportunity...
£20000 per annum: Recruitment Genius: Panel Wireman required for small electro...
£25000 - £27000 per annum: Recruitment Genius: An SME based in East Cheshire, ...
£18000 - £22000 per annum: Recruitment Genius: Do you have previous experience...