You may pick your friends based on the type of DNA that they have. A new study found that friends had more gene variations in common compared to strangers. This could prove that friends are the family that you choose. The researchers looked at over 1.5 million markers of gene variations that are found among humans. It was discovered that friends shared the same amount of genetic relation that a person would show to a fourth cousin or a great-great-great grandfather. This relation accounts for about 1% of their genome. Which, for not being related, is a lot! The most common shared gene found between friends was the olfactory gene which, is associated with smell. The researchers stated that people may be friends due to their ethnicity, but they did take this into account and did a pool of homogenous people from a caucasian background. Strangers were also randomly selected and their gene variations were compared. They took into account that these people may share gene variations based on their genetic backgrounds.
This article really surprised me. I had no idea that there was so much gene correlation between friends. It really makes you think twice about the people that you become friends with. You may share more genes with these people than you think! I believe that more research should be done between different races. The gene relation that occurred in the people that they sampled may just be due to their background and nothing to do with the fact that they are friends.