<P> This is an inherited trait in humans , where the recessive gene causes the cleft chin , while the dominant genotype presents without a cleft . However , it is also a classic example for variable penetrance with environmental factors or a modifier gene possibly affecting the phenotypical expression of the actual genotype . Cleft chins are common among people originating from Europe and the Middle East . </P>
<P> This is an inherited trait in humans , where the recessive gene causes the cleft chin , while the dominant genotype presents without a cleft . However , it is also a classic example for variable penetrance with environmental factors or a modifier gene possibly affecting the phenotypical expression of the actual genotype . Cleft chins are common among people originating from Europe and the Middle East . </P>
where does the dimple in the chin come from
where does the dimple in the chin come from
inherited trait in humans , where the recessive gene causes the cleft chin
inherited trait in humans , where the recessive gene causes the cleft chin