Possible genetic links to homosexuality like ‘finding needle in a haystack’

gay gene x

Scientists in the US looked at the whole genomes of around 1000 homosexual men and 1200 heterosexual men, finding several stretches of DNA where there were more differences between the groups than would be expected by chance. But the researchers caution their results are “best described as speculative”.

The authors of the study, published in Scientific Reports, were looking for differences in single letters of DNA between the groups of homosexual and heterosexual men. The two regions of the genome with the most differences were near genes whose roles might be linked to sexual orientation.

One gene is linked to the development of a brain region which can differ in men depending on their sexual orientation while the other gene is linked to thyroid function, which has previously been linked to male homosexuality, according to the authors.

“It is well established from twin and family studies that sexual orientation is partly heritable – that is, that whether someone is straight or bisexual or gay depends partly on their genetic makeup,” [said] Dr Brendan Zietsch.

“Because there are so many bits of DNA (millions) that vary among people, finding the relevant bits is like finding a needle in a haystack,” continued Zietsch.

According to [Dr. Nina] McCarthy, with any genome-wide association study “it’s really important to appreciate that association does not imply causation”.

Read full, original post: ‘Speculative’ genetic link to homosexuality found

Outbreak Daily Digest
Biotech Facts & Fallacies
Talking Biotech
Genetics Unzipped

Video: We can ‘finally’ grow GMOs—Nigerian farmer explains why developing countries need biotech crops

Nigerian farmer Patience Koku discusses the GMO crop trials she is conducting on her farm, and why growers can "rise ...
mag insects image superjumbo v

Disaster interrupted: Which farming system better preserves insect populations: Organic or conventional?

A three-year run of fragmentary Armageddon-like studies had primed the journalism pumps and settled the media framing about the future ...
dead bee desolate city

Are we facing an ‘Insect Apocalypse’ caused by ‘intensive, industrial’ farming and agricultural chemicals? The media say yes; Science says ‘no’

The media call it the “Insect Apocalypse”. In the past three years, the phrase has become an accepted truth of ...
breastfeeding bed x facebook x

Infographic: We know breastfeeding helps children. Now we know it helps mothers too

When a woman becomes pregnant, her risk of type 2 diabetes increases for the rest of her life, perhaps because ...
organic hillside sweet corn x

Organic v conventional using GMOs: Which is the more sustainable farming?

Many consumers spend more for organic food to avoid genetically modified products in part because they believe that “industrial agriculture” ...
benjamin franklin x

Are most GMO safety studies funded by industry?

The assertion that biotech companies do the research and the government just signs off on it is false ...
gmo corn field x

Do GMO Bt (insect-resistant) crops pose a threat to human health or the environment?

Bt is a bacterium found organically in the soil. It is extremely effective in repelling or killing target insects but ...

Environmental Working Group: EWG challenges safety of GMOs, food pesticide residues

Known by some as the "Environmental Worrying Group," EWG lobbies for tighter GMO legislation and famously puts out annual "dirty dozen" list of fruits and ...
m hansen

Michael Hansen: Architect of Consumers Union ongoing anti-GMO campaign

Michael K. Hansen (born 1956) is thought by critics to be the prime mover behind the ongoing campaign against agricultural biotechnology at Consumer Reports. He is an ...
News on human & agricultural genetics and biotechnology delivered to your inbox.
Optional. Mail on special occasions.
Send this to a friend