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Dimples

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Submitted By ronell72
Words 697
Pages 3
Clifford Redmond Jr
March 12, 2014
Professor Gibson
ANTH300
A Genetic Trait: Dimples In many eyes, dimples are considered a mark of beauty and loveliness. In an article by Manali Oak she describes "Dimples" almost perfectly. According to Oak, "Technically speaking, dimples are observable cavity created as a result of the underlying flesh of the cheeks. It is very difficult to understand that dimples are the outcome of a birth defect resulting from a diminished facial muscle. A dimple is the result of a defect in the subcutaneous connective tissue that unfolds during embryonic development. Also, a variation in the structure of the facial muscle zygomaticus major is known to cause dimples. When a person smiles, the smaller muscles on his/her face cause the facial skin to get extracted, thus resulting in a slight indention in the skin, a dimple. A tug in the skin of a human's chin caused by a condensed chin muscle, results in a dimpled chin.How is dimple formation related to genetics? Dimples are a dominant genetic trait and are inherited from one generation to another. Dimples on both cheeks are a normal matter, while a single dimple that takes place on one side of the face occurs every blue moon. As dimples are a dominant trait, only one gene is allowed to receive dimples.The gamete cells created through meiosis previous to the process of reproduction can accommodate genes that create dimples, or genes that produce the muscles manage dimples. During reproduction, each parent supplies one of these genes to the child. Since the dimple gene is dominant, a child has dimples if the gene is received. It means that if both your parents have dimples, you have 50-100% chances of inheriting dimple genes. If one of the parents possesses dimples, there are 50% chances that their children will acquire dimples. If both the parents do not have dimples, there are zero chances that their children will receive dimples. Nonetheless, their children can give recessive dimple genes to future generations. Dimples can be overlooked through multiple generations of a family. Penetrance is defined as the frequency with which a heritable trait is manifested in individuals carrying the gene's conditioning it. A variation in penetrance is referred to as variable penetrance. On account of this sensation, some individuals are only carriers of a certain gene but do not display the traits affiliated with it. However, they work as carriers of the gene and gives the traits to their sequential generations.In some cases, dimples can produce from unplanned modifications. In such cases, a little flaw in the facial muscles causes a dent in the cheek or a cleft chin, thus resulting in the making of dimples. Reduced penetrance is a miracle whereby certain genetic traits miss some generations and reappear in following generations, in different genetic patterns. At times, it so happens that a person receive a certain genetic trait and also receive another trait that subdues the prior one. For example, if a person receive the genes for dimples but also receives the genes accountable for a small face, the dent in a person's facial muscles will not be obvious on account of the diminish size of his face. The person works as a compliant carrier of the genes for dimples in such cases, as well. Strangely, dimples that are considered to beautify your face, are defects in your facial muscles. They are a classic example of the motto that says, "Imperfection is beauty!"(Manali Oak)". After reading this article, it helps me understand that dimples are an irregular dominant trait because it has a lot of carriers but it rarely pops up. Variation is important in the evolutionary process because it helps us adapt and gives us unique features on one another. It is what makes us special, and each every trait plays a role and we need it for our existence. Everything happens for a reason.

WORKS CITED:
· "Genetic Traits: Dimples." Genetic. N.p., n.d. Web. 19 Mar. 2014. .
· Arnold, Paul. "The Genetics of Dimples. The Inheritance Pattern of Cheek Dimples and Chin Dimples." Bright Hub. N.p., 29 Sept. 2009. Web. 19 Mar. 2014.

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