THE BABY'S EYE COLOR: WHEN IT IS DEFINED

Upon birth, one of the first things parents look at is baby's eye color. They have a bluish gray color, but most likely the color will vary over the months to have its final color.

Babies born with brown eyes will maintain that color or turn black, but babies whose eye color is undefined (they may appear gray or dark or light blue) will begin to be defined between six months and one year.

Why does the color of the baby's eyes change?

It is not that the color of eyes changes, but that it is defined. The iris is the color part of the eye and melanin is the substance responsible for giving color to the iris, as well as skin and hair. In the newborn, melanin-producing cells are still immature and are producing melanin, that is, gradually giving color to the eyes, as the baby grows and the cells mature. Therefore, in a newborn the eyes may be blue but at six months they may be black.

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There is no precise rule about the color of eyes the baby will have depending on the color with which they are born; It depends on the genetic inheritance of each person inherited from their parents. Nor is there a genetic law that indicates what color the baby will have depending on the color of the parents. Although there are higher or lower probabilities, genetics is very capricious. The same parents have both brown eyes and the baby is born with tremendous blue eyes.

It should also be borne in mind that the color of the eyes is linked to the skin color and race and that there is a tendency to dark eyes dominate over the light ones. However, if there is a strong genetic tendency in the family with clear eyes, it is very likely that the baby will also inherit them.

When the color of eyes is defined in babies

Nor is there a general rule about when the baby acquires its true or definitive eye color. It is a process that occurs in each baby individually, such as the rate at which hair grows, for example. In some babies, the eye color they have at six months is the same as they will have for the rest of their life, while in others not. In some the color is defined at five months while in others just a year or more.

In some children the color is not defined until the year or even the two years. It depends a lot on family inheritance and the color of the baby's skin. To light skins, with little melanin, it is related to light eyes (blue, gray or green), while skins with a lot of melanin are related to dark eyes (brown or black).

The generality is that after five or six months, the baby's eye color begins to be defined and that around two years they already have their definitive color. However, although the base color will not change, they may continue to change slightly in intensity and tones.

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The myth of the infant's eye color

It is often believed that the color of babies' light eyes is due to the fact that it is still fed with breast milk. That when the mother stops breastfeeding the eyes will be defined with the color they have at that time. This theory is a myth, It has no scientific basis. Eye color is defined by genetic inheritance and is not related to the type of feeding of the baby.

It is likely that this hypothesis has arisen because during the first months babies used to be fed exclusively with breast milk, a time that precisely coincided with that undefined color in their eyes.

The laws of genetics and eye color

Mendel's laws are a set of basic rules about the genetic transmission of parents to children. They explain that the eye color is determined by the genes, the dark colors being dominant genes and light colors recessive genes.

Let's look at an example in which the uppercase letters represent the dominant gene and the lowercase letters represent the recessive gene.

For example: if the father has blue eyes (aa) and the mother brown eyes (AA) all his children will be aA (a father's and A's mother), as the dominant gene is A, most likely the children have brown eyes

But of course, this assuming they are pure genes, that is to say that both mom and dad have both parents with the same eye color. Otherwise, two recessive genes could be combined and give rise to a light-eyed son, as has happened in my family (at least) with my oldest daughter who has green eyes.

Here you have a scheme about the inheritance of eye color, but keep in mind that genetics are very capricious and the rules are not immovable.

What color of eyes will the baby inherit? The genetic inheritance is very capricious and the rules are not immovable, but here you have an approximation to know the color of eyes that the baby will have according to the color of eyes of the parents… #colordeojos # colordeojosdelbebé # babies and more #baby #bands #herence # children #herence of parents # eyes # baby eyes

In short, genetic inheritance is super interesting and we could continue giving hundreds of examples. But given that genetics is unpredictable, no matter how much we do baby's eye color It will not begin to be defined until after the first five or six months of the baby.