Your closest friends may share more than just common interests, similar tastes, similar tastes. You can also share DNA together.
Stanford and other research institutions have found that friends share more DNA with each other than with strangers. This genetic similarity is not just random or something acquired along the way.
It is born with DNA. The explanation may be because we tend to associate with people who have similar genes.
This is called social homophily, and it shows how our society can be affected by our biology, just as it can affect things like how well we do in school or how healthy we are.
