Being gay IS in your genes, say scientists in controversial new DNA study

I know this will be extremely controversial but could these scientists be unto something?

  • Two stretches of DNA linked to  homosexuality in men discovered
  • Strengthens claims homosexuality is  decided by biology, not choice
  • Fears breakthrough could be used to  develop tests for expecting mothers
  • Reignites debate over whether a ‘gay  gene’ exists

Being gay could be in the  DNA.

Scientists have found two stretches of DNA linked to homosexuality in men.

The confirmation of the existence of a ‘gay  gene’ or genes will strengthen arguments that homosexuality is a matter of  biology, rather than choice.

The confirmation of the existence of a ¿gay gene¿ or genes will strengthen arguments that homosexuality is a matter of biology, rather than choice.

The confirmation of the existence of a ¿gay gene¿ or  genes will strengthen arguments that homosexuality is a matter of biology,  rather than choice

WHAT MAKES A HOMOSEXUAL?

Other studies suggests that conditions in the  womb also influence sexual orientation.

For instance, the more older male siblings a  man has, the greater chance he will be gay.

Scientists say the phenomenon cannot be  explained by the youngest boy being babied and mollycoddled or other differences  in the way they are brought up.

It is thought that carrying a male baby in  the womb triggers an immune response in the mother, creating antibodies that  attack part of the unborn child’s brain linked to sexual orientation.

This response gets stronger the more boys a  woman carries, raising the odds of homosexuality.

Exposure to hormones in the womb is also  likely to be important and some argue that upbringing plays a role in  sexuality.

However, it also raises the prospect of a  genetic test that could be used by insurance companies to discriminate against  clients or by pregnant women to abort gay babies.

In the study, Chicago University researchers  analysed the DNA of more than 400 pairs of gay brothers, recruited at Gay Pride  festivals at marches over several years.

This revealed flagged up two pieces of DNA  that seem to be linked to homosexuality.

It is not known which of the many genes they  contain are key or how they affect the development of sexual  orientation.

However, the result, revealed at a science  event in Chicago, backs up a contentious 1993 study.

That research, the first to find evidence of  a ‘gay gene’, created a storm of controversy, which was further fuelled when  other scientists failed to find a genetic link.

Dr Michael Bailey from Northwestern  University in Illinois, who contributed to the latest study, said it is the  biggest of its kind.

He added: ‘Sexual orientation has nothing to  do with choice. Our findings suggest there may be genes at play – we found  evidence for two sets that affect whether a man is gay or straight.

‘Although this could one day lead to a  pre-natal test for male sexual orientation, it would not be very accurate, as  there are other factors that can influence the outcome.’

Despite this, he would not would not object  to a prenatal test being developed.

He said: ‘Clearly parents should not be  allowed to torture or kill babies. But they can currently choose to terminate a  pregnancy early on, so they should be allowed to have as much information on the  future child as possible.’

Chicago University researchers analysed the DNA of more than 400 pairs of gay brothers recruited at Gay Pride festivals at marches over several years.

Culled from dailymail.co.uk

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