Is there a variation in a person s fingerprint? Please provide the following materials .

Human fingerprints are basically unchanged for life after the embryo is formed at 19 weeks of development. In addition to some external factors (such as burns, wear and tear, etc.), there are also some people who are born without fingerprints, which may be related to genetic mutations.

I've seen people who don't have fingerprints, because of the fatigue of work, the fingerprints are all gone, it's very pitiful, is this counted?

It doesn't exist, if it exists, and it changes in three days, then what palm prints and foot prints do babies need to be born now? And what is the use of the fingerprint entry system of the public security organs???

Yes, it won't be the same. Because everyone's physical development is different, fingerprints will also be different. So the fingerprints won't be the same.

Human fingerprints are indeed different, and everyone's fingerprints are different, and there are no two substances in the world that are exactly the same.

Of course, this is because the texture of each person's fingerprint is different, and it depends on the magic of nature to create human beings.

Fingerprints are used everywhere we live, but is there really no such thing as the same fingerprint in the world?

Human fingerprints are formed during the fetal period. From the 10th week onwards, the fetus's finger ends begin to grow **folds**, and these **folds are called "embryonic striae". The formation of these embryonic striae is due to the fact that the growth rate of the end of the fetal finger is greater than that of the middle part of the finger, resulting in the formation of **folds.

And these ** folds end up forming what we call fingerprints.

The morphology of fingerprints is also related to environmental factors. The morphology of fingerprints may be affected by the external environment during the fetal period, such as maternal diseases, drug influences, etc., which may affect the morphology of fingerprints.

In addition to the formation of embryonic striae, fingerprints are also associated with genetic factors. Studies have shown that the morphology and genetics of fingerprints are closely related. Identical twins have the same fingerprints, while fraternal twins have different fingerprints. This indicates that the morphology of the fingerprint is hereditary.

Human fingerprint is one of the unique identifiers of each finger, and it has important application value in criminal investigation and personal identification. So, why are there fingerprints? Let's take a look at the reasons for the formation of human fingerprints.

Human fingerprint is one of the unique identifiers of each person, and it has important application value in criminal investigation and personal identification. So, why are there fingerprints? Let's take a look at the reasons for the formation of human fingerprints.

The morphology of fingerprints is also related to environmental factors. The morphology of fingerprints may be affected by the external environment during the fetal period, such as maternal diseases, drug influences, etc., which may affect the morphology of fingerprints.

Under normal circumstances, the fingerprint does not change. Fingerprints are mainly ** tissues, and the repair ability after injury is relatively strong. Suggestion: Unless the finger is severely injured and the scar is repaired, the original fingerprint can be docked normally or destroyed.

In general, the child's fingerprint only changes in size with age, but its shape does not change. Fingerprints are the lines formed by the concave and convex ** on the fingertips at the end of the fingers, and the fingerprints of children are affected by the combination of genetics and environment.

Benefits of Fingerprint Recognition Technology:

Fingerprint recognition technology matches a person's fingerprints and verifies their true identity by comparing their fingerprints with those of a pre-saved fingerprint.

Each person (including fingerprints)** texture is different in pattern, breakpoint and intersection point, is unique, relying on this uniqueness and stability, we can create fingerprint recognition technology. Each person's ** lines, including fingerprints, are different in patterns, breakpoints and intersections, showing uniqueness and lifelong unchanged. <>

Can fingerprints be inherited?

Although no two fingerprints are exactly the same, identical twins have similar fingerprints. Moreover, there are similarities in the shape of different fingers of the same person. The study found that there are gender differences and racial differences in the types of fingerprints with high occurrence rates.

For example, in the fingerprints of Chinese and Japanese, the occurrence rate of bucket pattern and kei pattern is roughly the same, accounting for more than 90% of the whole; Among the fingerprints of Europeans, the occurrence rate of the Kei pattern is high; In the fingerprints of Americans, the appearance rate of arcus is higher. Because the fingerprints of identical twins or the same race are similar, it can also be said that fingerprints are "inherited". However, the formation of fingerprints is not only influenced by genetics, but also by environmental factors and other factors.

Professor Shin Inoue of Hokkaido University in Japan, who has long been engaged in anatomical research, explains: "The details of the human body also vary from person to person. Fingerprints are widely used for identity identification because they are so convenient to use.

How are fingerprints formed?

By the time the fetus reaches 4 months, fingerprints have already been formed. Before that, at about 10 weeks of development, large bulbous bulges form temporarily in areas such as fingertips—like the pads of a cat's claw, which play a decisive role in the formation of fingerprints. When the bulge begins to shrink and collapse, wrinkles begin to appear at the junction of the epidermis and dermis, which is the budding "fingerprint mold".

The cells generated by the fingerprint mold are squeezed hard against the surface, forming fingerprints on the epidermis when the fetus reaches 4 months of development. It is believed that fingerprints are developed from densely arranged "molds" on bulging surfaces. So, the shape and size of the original bulge determines the shape of the fingerprint.

Fingerprints are unique features of the human body.

And they are complex enough to provide sufficient features for identification. In addition to being unique, fingerprints are also hereditary and immutable. Fingerprints are the lines formed by the concave and convex ** on the tips of human fingers.

Fingerprints can increase the friction of the hand when touching objects, making it easier to exert force and grasp objects. It is a natural occurrence in the process of human evolution. No different person has been found to have the same fingerprint, so each person's fingerprint is unique.

Since fingerprints are unique to each person, in recent hundreds of years, the fingerprints left by criminals at the crime scene have become important clues to hunt down suspects. Nowadays, fingerprint identification methods have been computerized to make the identification process faster and more accurate.

Fingerprints are genetically influenced.

Since each person's genetics are different, so are their fingerprints. However, although the formation of fingerprints is mainly influenced by genetics, there are also environmental factors, fingerprints are already formed when the fetus is three to four months old in the mother's body, but the fingerprints will change slightly during the child's growth and will not be finalized until the puberty is about 14 years old. In the process of development, although the epidermis, dermis, and stromal layer are growing together, the soft subcutaneous tissue grows faster than the relatively hard epidermis, so it will exert a steady stream of upward pressure on the epidermis, forcing the slower-growing epidermis to contract and collapse to the inner tissue, gradually bending and wrinkling, so as to reduce the pressure exerted on it by the subcutaneous tissue.

In this way, on the one hand, they are forced to attack upwards, and on the other hand, they are forced to retreat, resulting in the epidermis growing in twists and turns, and the potholes are uneven, forming lines. This process of bending and wrinkling fluctuates with the change of the upper pressure generated by the inner tissue, forming uneven ridges or folds until the development process stops, and finally forms a fingerprint that remains unchanged until death. Some people say that fingerprints change after a bone marrow transplant, but that's not true.

Fingerprints do not change unless they are skin grafts or damage deep into the basal layer.

This is called phenotype. There is only one method of phenotyping, which is supported by a large amount of statistical evidence.

Moreover, the expression of "probability" itself has shown that his concept is a statistical concept, and the phenotype of fingerprints is determined by both nature and acquisition. The congenital conditions are the same It is almost impossible to have the same acquired conditions.

U.S. criminal investigators did find cases of duplicate fingerprints, but because there was other evidence to corroborate, they didn't run into trouble.

Statistically, there is no essential difference between a very small probability and an unlikely event. If we don't use statistical thinking to determine, then there is no impossible event in the world – because this "impossible" needs to be proved by exhaustive means. And this in itself is impossible.

An unlikely event in the usual sense is equivalent to a very small probability event.

There are no two identical fingerprints in the world, which is the same as "there are no two leaves in the world that are exactly the same".