「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) 16:13時点における版

Dimples is the word directed at any natural indentation or dent on your body, in fact refers to the face. They are mostly visible when someone smiles. They certainly are a genetic trait following an autosomal dominant pattern of inheritance.
Dimples could be present on both cheeks or one, and some people have them on their chin. Like all physical traits that you possess you've two genes on their behalf. One inherited out of your father and one from the mother. The way that a physical trait is expressed, WhatsApp Girls thus the way you look is a result of either a mixture of dominant genes, a dominant plus a recessive gene or two recessive genes.
The genetics of dimples follows a dominant pattern of inheritance, in other words that a child only should inherit one dominant gene for dimples to get them. When someone references a gene for dimples they mean a gene or set of genes that will produce the physiological and anatomical changes that lead to these skin indentations. So what are the chances that the 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 dad has dimples and also the mother won't, then the child carries a 25-50% possibility of inheriting dimples.
If mom has dimples and the father does not, then this child carries a 25-50% potential for inheriting dimples.
If both dad and mom don't have dimples then their child will not, unless there exists a spontaneous genetic mutation.




Whilst much is known regarding the genetics of dimples, there is limited research about the anatomy of dimples; what sort of skin and underlying muscles form these indentations. There can be a number of various schools of thought.




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It could be that dimples are formed due to presence of shorter muscles close to the cheeks and when they contract (if you smile) pull on the overlying skin. Others choose variations in the facial muscle called Zygomaticus major. It begins as a single muscle, but during development moves and becomes two. The inferior Zygomaticus major muscle is defined above the corner of the mouth and also the inferior Zygomaticus major muscle sits below the corner in the mouth. Variations inside shape and size of those two muscles could be the reason behind dimples.
There's a lot easier explanation for the inheritance of your dimpled chin. It's brought on by an indentation within the jaw bone.
C. Szeto -released under Creative Commons License