Dimples are a much admired beauty feature. Some of the best looking women and actresses in the world -- Julia Roberts and Drew Barrymore for instance -- sport dimples. Dimples are not restricted to women only. A dimpled smile always generates a feeling of openness and warmth.
But did you know dimples are the outcome of a birth defect? Strange but true!
Dimples are visible concave depressions that some people have which become visible when they smile. Most dimpled people have them on both cheeks but occasionally you come across a person with a single dimple only. Some people, mostly men, have a dimple on the chin. Dimples are inherited from either one or both parents.
Each human being has about 25000 genes. Each gene is responsible for some facet or trait in that individual. Genes are something a person is born with and inherits from his or her biological parents. Dimples are a dominant trait which means that this gene is necessary from only one parent to inherit dimples. Both the parent themselves may not have dimples but one or both of them may carry the gene which they pass on. The gene is likely to continue for many successive generations
A probable cause of the formation of dimples is a variation in structure of the muscles of the face. The person has shortened facial muscles that tend to get pulled when he or she smiles resulting in the formation of a dimple. This fault of shortened facial muscles occurs during the stage of development of the embryo.
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