Does DNA have a place in love? Soulpancake brought in couples to take a genetic compatibility test to determine what their DNA has to say about their love. To determine their overall compatibility, they focused on their biocompatibility (will they make great babies? are they attracted to each other’s scent and appearance?) and their neurocompatibility (how do their dopamine, serotonin, and oxytocin levels affect how compatible their brains are?)