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For the Love of Milk – Why Humans Gained Lactase Persistence

Growing up, milk and butter were staples. In college, you consumed Kraft dinner and extra cheesy pizza in copious amounts. But now, eating plain yogurt leaves you bloated and uncomfortable, and the last time...

Genetic Changes That Affect Serotonin Levels can Explain Unhappiness

Grumpy, Happy, Sleepy and Bashful - four of Disney’s dwarfs are named after feelings ruled by one chemical in the brain, serotonin. It may not make you Dopey or Sneezy, but abnormal serotonin levels...

The DRD4 Gene: Of Dopamine and Sex

“He shoots. He scores”. As Wayne Gretzky skates around the rink holding the Stanley Cup, fans go wild. You can feel the rush, the excitement, and the joy, as the brains of the players...

AVPR1A: The Key to Successful Sexual Monogamy in Men

It is said that swans mate for life. The same can be said for humans, but modern genetic tests tell us that this is more of a myth than the biological truth. When biologists...

AVPR1A: The “Infidelity” Gene is no Longer Just for Men

When Jerry Springer announces, “he is NOT the father”, the camera spans to show a woman overcome with disbelief and fleeing backstage in tears. Paternity tests used to be something that only happened on...

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