'No gay gene' says major study, but genetics does influence sexual behaviour
Upbringing, personality, and nurture have far more impact on choices
Your support helps us to tell the story
From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.
At such a critical moment in US history, we need reporters on the ground. Your donation allows us to keep sending journalists to speak to both sides of the story.
The Independent is trusted by Americans across the entire political spectrum. And unlike many other quality news outlets, we choose not to lock Americans out of our reporting and analysis with paywalls. We believe quality journalism should be available to everyone, paid for by those who can afford it.
Your support makes all the difference.There is no such thing as a single “gay gene” researchers have said, but genetics – along with environmental factors – can influence a person’s sexual preferences.
The largest ever study of its kind examined data and DNA information of about 500,000 people and found there were thousands of genetic variants linked to same-sex sexual behaviour, most of the them having a minor impact.
The researchers said non-genetic factors, including upbringing, personality, and nurture, had far more influence on a person’s choice of sexual partner.
The researchers, writing in Science, suggested genetics may account for as much as one-third of the various factors that determine whether someone is attracted to same-sex partners.
“We scanned the entire human genome and found a handful – five to be precise – of locations that are clearly associated with whether a person reports in engaging in same-sex sexual behaviour,” said Andrea Ganna, a biologist at the Institute of Molecular Medicine in Finland who co-led the research.
The study looked at survey responses and performed analyses known as genome-wide association studies (Gwas) on data from more than 470,000 people who had given DNA samples and lifestyle information to the UK Biobank and to the genetics testing company 23andMeInc, which is based in the US.
Asked why they had wanted to conduct such research, the team told reporters on a teleconference that previous studies on this topic had mostly been too small to offer robust conclusions.
“Previous studies were small and underpowered,” Mr Ganna said.
“So we decided to form a large international consortium and collected data for [almost] 500,000 people, [which] is approximately 100 times bigger than previous studies on this topic.”
Sexual rights campaigners welcomed the study, saying it “provides even more evidence that being gay or lesbian is a natural part of human life”.
“This new research also re-confirms the long-established understanding that there is no conclusive degree to which nature or nurture influence how a gay or lesbian person behaves,” said Zeke Stokes of the US-based LGBT+ rights group GLAAD.
Additional reporting by Reuters
Subscribe to Independent Premium to bookmark this article
Want to bookmark your favourite articles and stories to read or reference later? Start your Independent Premium subscription today.
Join our commenting forum
Join thought-provoking conversations, follow other Independent readers and see their replies
Comments