The origin of the two petals of the little toe

It is said that in the Ming Dynasty, Henan, Hebei, Jiangxi and other places were sparsely populated at that time, so Zhu Yuanzhang, who unified the world, wanted to unify most of the people in Shanxi, which has a large population, and move southward in order to develop the economy of other regions. In ancient times, people didn't like to leave their hometowns, but they couldn't disobey the emperor's orders. After being gathered under the big locust tree in Hongdong County, the clan leader slashed each person's little toe nail and divided the nail into two as a mark to show that he was from Hongdong, Shanxi.

"Little toe with two flaps" refers to the metatarsal toe, also known as "complex nail" and "chastomial nail". In medicine, it is called flap or complex of little toe, which refers to the split nail of the little toe. rather than a complete piece. Western medicine believes that this is a foot lesion, a callus generated by friction. In fact, scalloped nails are an autosomal dominant trait and cannot be used as a specific marker for a population.

According to genetics, the inheritance of scalloped nails is mainly controlled by a pair of alleles, and the transmission in the family follows the Mendelian segregation law. It has the following characteristics: the genetic gene is on an autosomal chromosome, and inheritance has nothing to do with gender; men and women have equal chances of occurrence; the trait is expressed in each generation and is continuously transmitted. In other words, whether a person is a Han nationality or not has no direct relationship with him or her.

In addition, there is another theory that, faced with an uncertain future, Shanxi people reluctantly gathered under the big locust tree in Hongdong County and were pushed and pushed away from their hometown. At this time, the escorting soldiers chopped each person's little toe nail with a knife. From then on, anyone with a cracked or split little toe nail was an immigrant from Shanxi.