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Cleft chins are common among people originating from Europe, the Middle East and South Asia. [21] There is a possible genetic cause for cleft chins, a genetic marker called rs11684042, which is located in chromosome 2. [22] In Persian literature, the chin dimple is considered a factor of beauty and is metaphorically referred to as "the chin pit ...
Offspring with either one or two copies of the dominant allele will display the dominant phenotype. Very few phenotypes are purely Mendelian traits. Common violations of the Mendelian model include incomplete dominance , codominance , genetic linkage , environmental effects , and quantitative contributions from a number of genes (see: gene ...
Ectrodactyly–ectodermal dysplasia–cleft syndrome, or EEC, and also referred to as EEC syndrome [1] and split hand–split foot–ectodermal dysplasia–cleft syndrome [2]: 520 is a rare form of ectodermal dysplasia, an autosomal dominant disorder inherited as a genetic trait.
Complications may include breathing problems, problems seeing, cleft palate, and hearing loss. [5] Those affected generally have normal intelligence. [5] TCS is usually autosomal dominant. [5] More than half the time it occurs as a result of a new mutation rather than being inherited. [5] The involved genes may include TCOF1, POLR1C, or POLR1D. [5]
The following are some of the gene count estimates of human chromosome 2. ... (autosomal dominant, Lewy body) ... Cleft chin [22]
[7] [13] It is believed that cheek dimple genes occur on the 5th chromosome, whereas cleft chin genes occur on the 16th. [14] However, the University of Utah considers dimples an "irregular" dominant trait that is probably controlled mostly by one gene but is influenced by other genes.
Van der Woude syndrome is inherited as an autosomal dominant disease caused by a mutation in a single gene with equal distribution between the sexes. The disease has high penetrance at about 96% but the phenotypic expression varies from lower lip pits with cleft lip and cleft palate to no visible abnormalities.
Medical genetics: Symptoms: Jaw, rib, and palate anomalies ... Cerebro-costo-mandibular syndrome is a very rare genetic disorder which is characterized by jaw/chin ...