Pregnancy

Why Are Twins’ Fingerprints Not Identical?

Two brothers born in a single birth or in a single birth are called twins. The belief that twins have identical fingerprints is a misconception. While identical twins share many physical characteristics, each person has their own unique fingerprint.

Gemini are of two types:

* Fraternal twins (fraternal twins)

* Identical twins (identical twins)

Fraternal twins may not be alike. Some twins, on the other hand, are indistinguishably similar in appearance, but may have differences in terms of their genetic structure and DNA sequence. If you’re wondering how identical twins are and why fingerprints aren’t identical, read on for more information.

Egg Twins (Dizygotic Twins)

Fraternal twins develop from two separate eggs and two different sperm, ie two separate zygotes. During their development, there are 2 separate placentas and 2 separate umbilical cords. According to the Minnesota Twin and Family Research Center, 50 percent of the DNA (genes) of fraternal twins are the same. Fraternal twins (fraternal twins) may not look alike as much as they do not share more DNA than siblings born at different times, it is possible that one is a boy and the other a girl. The same is not possible in identical twins.

Identical Egg Twins (Monozygotic Twins)

Identical twins develop when a single egg is fertilized with a single sperm and then divided into two. A single placenta is formed during development. However, there are only 2 umbilical cords. Because they consist of a single zygote, identical twins have the same genetic makeup. Identical twins share many physical similarities as a result of their DNA, including hair color, eye color, and skin tone. In fact, it can be said that one of the identical twins is the mirror of another. Environmental factors can make slight differences in the physical appearance of identical twins, although other people may not be able to tell them apart. The main differences are mostly observed in weight and height. Fingerprints are not included in the genetic similarities of identical twins. So identical twins’ fingerprints are close but not identical. This is because the formation of fingerprints depends on both genetics and environmental factors in the womb.

Can Twins’ Fingerprints Be the Same?

The probability of encountering the same fingerprint in identical twins is almost negligible. While articles posted online over the Internet often discuss the possibility that some of the topics that science explains may be wrong, no research has been found that identical twins can have the same fingerprints.

According to the Washington State Twin Register, identical twins have similar fingerprint characteristics, including loops, knots, and belts. However, observing such similarities with the naked eye does not mean that the fingerprint composition is exactly the same.

In fact, the National Forensic Science Technology Center states that it has not been established that anyone, including identical twins, has the same fingerprint as anyone else. Also, the marks on the ends of each of the fingers of any person are completely unique, even though they have similar folds, loops, and arches. The police take individual fingerprints of all 10 fingers to match any person’s fingerprints found at the scene, it is useless to trace a single finger.

How Are Fingerprints Created?

A person’s fingerprints are formed in the womb based on a combination of genes and environmental factors. According to the Washington State Twin Registry, fingerprint patterns are determined between the 13th and 19th weeks of fetal development. A fingerprint is an example of a phenotype along with other physical characteristics, that is, it is determined by the interaction of a person’s genes and the developmental environment in the uterus.

The identification of fingerprints partially by DNA explains why identical twins appear to have similar fingerprints at first. Environmental factors in the uterus contribute to the development of fetal fingerprints by ensuring that the fingerprints of identical twins are not the same.

These factors can include:

* Access to nutrients in the uterus

* Umbilical cord length

* General blood flow

*Blood pressure

* Position inside the uterus

* Overall finger growth rate

As a result, fingerprints of identical twins may have similarities in loops, knots, and lassoons. However, on closer inspection, small details are noticed, including the ridges in the fingerprint and the gaps between the branches. It can be seen that due to environmental factors affecting development in the uterus, it is impossible for identical twins to have the same fingerprints.

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