DNA Love Connection? Test Uses Genetics to Determine Compatibility

With their latest service devoted to helping couples search for their soul mate, a group of scientists say that in the search for compatibility, love is all about DNA compatibility.

They call it Instant Chemistry, a company founded by Ron Gonzalez, a psychologist and neuroscientist, and his wife, Sara Seabrooke, a geneticist.

They said they were inspired to create Instant Chemistry after seeing how many marriages fail.

"If we can help reduce those divorce rates by helping couples learn more about themselves [and] really have that insight that you would take ... 10 to 15 years to get and you could have it today, you can imagine that that could help ease a lot of relationship tensions," Gonzalez said.

Tune in for the full story on ABC News' "Nightline Prime," Saturday, June 28, at 10 p.m. ET.

The key to Instant Chemistry, they said, is in the DNA. Couples can use a test that looks at genes in the immune system. According to Gonzalez and Seabrooke, the more differences there are between two people's immune systems, the more attractive they'll find each other.

"If you have two people come together with very different immune systems and they have a child, the child is getting immune system genes from both the mother and the father," Seabrooke said. "The more diverse those genes are, the more chance the child has of withstanding different pathogens or infections than if their immune systems were similar between both parents."

Instant Chemistry's test also looks at the serotonin transporter gene, a gene that determine a human's personality, such as if a person has mood swings or is more even-tempered.

"Essentially, we tell you how you and your partner may deal with a conflicted situation," Seabrooke said. "We give you the breakdown of how the genetics plays a role in your relationship and also how psychology plays a role."

While Gonzalez and Seabrooke said the test won't guarantee that couples will be conflict-free, they said that it's a tool that can help a couple strengthen their relationship. If someone is looking for a partner, the test can also help them find someone they will more likely have a satisfactory relationship with over time.

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DNA Love Connection? Test Uses Genetics to Determine Compatibility