It was previously thought that club allegiance was determined by "peer pressure and copying family members," but the new research challenges that theory.
According to the research, the Liverpool gene is associated with a "love of European travel" and "excellent long-term memory".
The gene only appears to explain allegiance to one of the two teams, indicating that either we are all Liverpool or Everton fans deep down, or that more research is needed.
Have you seen any April Fools' Day hoaxes in the news? Email them to us at email@example.com or comment on our Facebook page.
More top news
Nearly a quarter of children in the UK under the age of five are overweight or obese, according to researchers.
Answers to some of the most regularly-asked questions about voting in the General Election.
The Spanish football federation has suspended all games past 16 May in a dispute over television rights.