When I was very young, I heard the old man in the family say the nursery rhyme of "one bucket of poverty, two buckets of wealth", and at that time, looking at the "bucket" on his two thumbs, I believed that I would be able to become the richest man in the world in the future.
When I grew up, the facts proved to me that the number of "buckets" on my fingerprints had absolutely no relationship with the rich and the poor, and since the "buckets" had nothing to do with the rich and the poor, why did such a nursery rhyme exist? At a very early age, people discovered that fingerprints are unique, that is, everyone's fingerprints are different. Some people think that it is a recent thing for humans to discover that fingerprints have uniqueness, because the earliest paper on fingerprint recognition was published by the British botanist Gru, and this paper was published in 1864. Note, however, that since ancient times, China has had a tradition of "pressing the mudra" on contracts, and according to existing records, the matter of "pressing the mudra" can be traced all the way back to the Zhou Dynasty.
If the ancient Chinese did not discover the uniqueness of fingerprints, then what is the meaning of "pressing fingerprints"? Therefore, it can be inferred that the identification and application of fingerprints should have been discovered by Chinese as early as possible.
Although the fingerprint has uniqueness, but this "unique" is not absolute, in fact, the exact same fingerprint still exists, but this probability is very low, about every 15 billion fingerprints to find two exactly the same. Although the appearance of fingerprints is as many as ten billion, all fingerprints can be simply classified into two categories, namely "bucket" and "dustpan". What is a "bucket"? That is, the fingerprint can be regularly enclosed into an approximately circular pattern, which is quite similar to a container called a "bucket", hence the name.
In addition to the "bucket" other fingerprint graphic styles are more, their shape is usually difficult to describe, but they are relatively loose, and somewhat similar to the dustpan used in the home, hence the name.
Knowing how the names "bucket" and "dustpan" came from, we also know where the saying "one bucket is poor, two buckets are rich" comes from. The container of "bucket" has been used to hold grain since ancient times, and in agricultural society, the amount of grain represents whether a family is rich or not, so "bucket" means more grain, which means rich, so people with two buckets are naturally richer than one bucket. But in the final analysis, all this is just a kind of expectation for people's happy life, but in fact, the number of "fights" in the fingerprints has nothing to do with rich and poor. However, fingerprints have nothing to do with rich or poor, but they are related to other problems, such as physical development.
In the field of life sciences, there is such a research direction, that is, "phenotypic research".
The so-called phenotypic research is to study the relationship mechanism between various biological characteristics of living organisms, such as the shade of skin color, the shape of ears, the style of fingerprints, and other surface features, genes and the environment. By accumulating human phenotypic group data, some diseases can be accurately diagnosed and pre-regulated, so many countries in the world attach great importance to phenotypic group research, and China is no exception. In 2015, we set up a major project for phenotypic group research, and in 2019, the cub injury Zhang Jiang established the world's first cross-scale multi-dimensional human phenotype group precision measurement platform. This time, the Shanghai Institute of Nutrition and Health of the Chinese Academy of Sciences and the team of academician Jinli of Fudan University have joined hands with more than a dozen scientific research institutions at home and abroad to make certain breakthroughs in the study of the relationship between fingerprint formation and genes related to limb development.
Fingerprints are generated on the skin, so scientists have long believed that the genes that affect fingerprint formation have a strong correlation with genes that affect skin formation, but this is not the case.
After genome-wide association scans and analysis of 23,000 individuals, the researchers identified 43 inherited genes that were associated with human fingerprint tubes, which had a clear strong association with genes that affected limb development. The formation of fetal fingerprints begins in the tenth week of pregnancy, and a complete fingerprint is formed around the 18th week, which also happens to be a critical period for fetal limb development and limb movements, which further supports the correlation between fingerprints and limb development.
In the course of the study, the scientists found some interesting associations between fingerprints and limb development, such as the relationship between fingerprints and finger length.
If a person has more "buckets" on his fingerprints, then the longer his little thumb is relative to the length of the entire palm, but this is not to say that the more "buckets", the longer the palms, or it may be that the palms are short, so the little thumb appears to be relatively long. People with fewer "buckets" also have obvious correlation characteristics on the palms of the hand, and the less "buckets" there are, the longer the first knuckle of the index finger, that is, the knuckle on the tip of the finger. Of course, these are only common situations, individual cases also exist, and there are still many questions about the correlation between fingerprints and limb development. It is believed that in the future, with the deepening of phenotypic group research, this research can finally be applied to the screening and diagnosis of diseases.