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If two people get 90 per cent compatibility, for instance, it doesn’t mean they answered nine out of 10 questions the same – whether you’re an extrovert or an introvert carries more weight than your shared hobbies, for example.

“If you’re a good host, you introduce two people and point out the things they’ve got in common – it acts as an icebreaker.” When a compatible person is nearby, Street Spark sends an alert that pops up on the phone’s screen to let you know there’s a potential date just around the corner.Users can then either extinguish or ignite this ‘spark’.These results can then be used either to check compatibility with your current partner, or to help you find a suitable mate by taking the data to one of several dating services (both on and offline) that offer a ‘DNA dating’ service.We usually have nine MHC genes, each with many variants, so there are hundreds of possible combinations.Brown believes that this DNA dating adds an additional filter – along with profiles and photos – for finding a compatible mate online. “A filter for chemistry is something people do naturally,” she says.

“The butterflies in the stomach and adrenaline in the blood will all still be there – it’ll just be there sooner.” Street Spark is a smartphone app that helps you meet potential partners based on location.“This is not really love, it’s sex.” For , Gene Partner will test your DNA, sequencing key genes and examining those in your major histocompatibility complex (MHC).These are genes which produce proteins that sit on the surface of cells so that the immune system can identify foreign invaders.Applied to single people, this became e Harmony’s first matching algorithm.Today, the personality questionnaire has about 300 questions (the original research used 700), but the algorithm is much more complicated.e Harmony has a reported 33 million members worldwide and even has its own lab, where psychologists question and observe couples and use the results to continuously refine the matching algorithm.