A major study on genetics and sexuality found that there is no such thing as a single “gay gene”, but that doesn’t mean genetics aren’t in play.

The largest ever study of its kind, with a over half a million people involved, found five genetic markers common in people who identify with LGBT behavior.

According to MUN biology professor Dr. Steve Carr says the answers aren’t as simple as one marker that determines to whom you’re attracted. He says one of the five markers helps determine sense of smell, another regulates sex hormones, but while they are all significant associations, it doesn’t mean they’re major contributors, and having them doesn’t determine sexuality.

The study ultimately concluded that both environmental factors and genetics can influence a person’s sexual preferences, but research into the identified markers continues.