Professor GibsonANTH300Clifford Redmond Jr12 March 2014A Genetic Trait: DimplesIn many eyes, diples are considered a sign of beauty and gracefulness. A Manali Oak article describes "Dimples" almost perfectly. “Technically speaking, dimples are visible indentations formed by the underlying flesh of the cheeks” (Oak, Manali 2009). It is very difficult for us to understand that dimples are the result of a birth defect resulting from the contraction of scar tissue or trauma (TheFreeDictionary.com). A gelase is the result of the zygomaticus major muscle, a facial muscle. It starts at the front of the cheek and extends to the upper lip. This action causes the muscles to move the lips up and sideways. Conditions that can affect this muscle are myalgia, tears, strains, neuromuscular disease, lacerations, contusions, Bell's palsy, atrophy, infectious myositis, and myopathy (zygomaticus major muscle function, origin, and anatomy). Let's say that when someone smiles, the minor muscles in the face cause the facial skin to retract, thus causing a small indentation in the skin, known as a dimple. Some people may wonder how can the formation of dimples be somehow linked to our DNA? Well, dimples are a dominant genetic trait and if both of our parents have dimples, then we their children have a 50-100% chance of passing the dimples down to us. But if one parent only has dimples, our chances of getting them will only be 0-50% chance of inheritance. You can imagine that if neither parent had dimples, nine times out of ten the child won't have them. Seeing dimples on both sides of your cheeks is as normal as can be, but a solitary dimple is rare and occurs every blue moon. As we know, the center of the card is important in the evolutionary process because it helps us adapt and gives us unique characteristics compared to each other. It's what makes us special, and every trait plays a role and we need it for our existence. Everything happens for a reason.WORKS CITED:"Meiosis." - definition from Biology-Online.org. March 12, 2014 "Penetration". - definition from Biology-Online.org. March 12, 2014 .Quercia, Manali. Buzzle.com. January 16, 2009. Buzzle.com. March 12, 2014.TheFreeDictionary.com. March 12, 2014 "Zygomaticus major." Function, origin and anatomy of the zygomaticus main muscle. March 12. 2014 .