Saturday, April 25th 2026
Identical twins are formed when a single fertilized egg splits into two separate embryos in the early stages of development.
Since they originate from the same cell, the embryos have virtually identical DNA.
This means that they will be almost indistinguishable for characteristics that have a strong genetic basis, such as blood type, eye color and major facial features. portrait.
From that initial moment, however, their paths begin to diverge.
Even though twins may share the same womb, they experience that environment in different ways.
For example, small kinks in the umbilical cord can skew the distribution of nutrients to one twin compared to the other.
This affects birth weight and development. early organs.
Beyond the genetic code, there is a field called epigenetics, which explains how external factors turn genes on or off.
While the DNA sequence remains the same, the chemical “tags” on it can change.
This process can lead to changes in the pattern of gene expression, which in turn affect many characteristics, such as growth, temperament, and susceptibility to chronic diseases.
Meanwhile, small changes in amniotic fluid pressure or position in the womb cause identical twins to be born with different fingerprints.
Although genes control the basic shape, the physical environment sculpts the finer features.
After birth, the differences become even more apparent. Random genetic mutations can appear in one twin and not the other at any time in life, which explains why one may develop cancer or diabetes while the other does not.
Random also plays a critical role; one twin may be infected with a virus that causes an autoimmune reaction, while the other escapes this risk.
In short, nature provides the outline, but environment and lifestyle paint the final picture. Although they grow up in the same family, they have different teachers, friends and role models.
As they mature, they choose different professions, live in cities with different levels of pollution and follow specific food diets.
All these factors influence and interact with their DNA, shaping them as unique and inimitable individuals. /tesheshi.com/
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Source: prizrenpost
