「The Genetics of Dimples. The Inheritance Pattern of Cheek Dimples and Chin Dimples」の版間の差分

2016年7月27日 (水) 23:20時点における版

Dimples is the word provided to any natural indentation or dent on the human body, truly refers to the face. They are most commonly visible when someone smiles. They really are a genetic trait following an autosomal dominant pattern of inheritance.
Dimples may be present on both cheeks or one, and a few people have them on his or her chin. Like all physical traits which you possess you have two genes for them. One inherited from a father and one out of your mother. The way that a physical trait is expressed, thus the way you look is a result of either a mixture of dominant genes, a dominant and a recessive gene or two recessive genes.
The genetics of dimples follows a dominant pattern of inheritance, that is to say that a child only must inherit one dominant gene for dimples to have them. When someone covers a gene for dimples they mean a gene or group of genes that can produce the physiological and anatomical changes that cause these skin indentations. So what include the chances which a child may inherit them?
If both mom and dad have dimples as there are a 50-100% chance that their son or daughter will.
If the father has dimples as well as the mother will not, then your child includes a 25-50% possibility of inheriting dimples.
If the mother has dimples and the dad does not, then a child features a 25-50% potential for inheriting dimples.
If both parents don't have dimples then their son or daughter will not, unless there is a spontaneous genetic mutation.




Whatsapp india Whilst expensive is known about the genetics of dimples, there was limited research around the anatomy of dimples; how a skin and underlying muscles form these indentations. There certainly are a number of different schools of thought.




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It may be that dimples are formed due to the presence of shorter muscles near the cheeks so when they contract (when you smile) pull around the overlying skin. Others choose variations in the facial muscle called Zygomaticus major. It starts as a single muscle, but during development moves and becomes two. The inferior Zygomaticus major muscle lies above the corner of the mouth and also the inferior Zygomaticus major muscle sits below the corner in the mouth. Variations within the shape and size of these two muscles could be the reason for dimples.
There's an extremely easier reason for the inheritance of an dimpled chin. It's caused by an indentation within the jaw bone.
C. Szeto -released under Creative Commons License