During pregnancy, you may wonder about genes, how the sex of the fetus is determined, and what genetic disorders may occur, so learn about the role of genetics in the personality traits of your fetus, and get to know us about Genetic traits of the fetus In this article.

How does genetics work?

While waiting for the baby, you may have tried to envision what your baby will look like, will he be as tall as his father? Or will he have curly hair like yours? Or will he inherit his grandfather’s sense of humor?

Experts estimate that there are 60,000 to 100,000 genes (composed of DNA) in the 46 chromosomes of a human being. A child gets 23 chromosomes from his mother and 23 from his father. With all possible genetic combinations, one pair of chromosomes has the potential to produce 64 trillion. different adjective. This might give you an idea of ​​how impossible it is to predict what your baby will look like, because genetics is so complex, but with a short course the right information will help guide your imagination.

Remember learning about genes and fruit flies in high school biology? At the time, you were told that a dominant gene always beats a recessive gene, so scientists have always known that humans are more complex than fruit flies, but in recent years, they have learned just how complex.

Most human traits are polygenic, the result of many genes working together, and to not complicate matters further, for some traits, such as height and weight, and especially personality, the environment also has a significant influence on which genes are expressed and which remain silent.

Genetic traits of the fetus

eye color

If only one pair of genes were involved in choosing eye color, there would be at least three shades of eye color, brown, blue, and possibly green. But human eyes come in a whole range of different shades of these colors. That’s because eye color is a polygenic trait. .

Eye color is determined by the amount of melanin, or brown pigment in the iris, dark eyes have large amounts of it, blue very little, and other colors such as green, hazel have different amounts, and since different genes are likely responsible for how much brown pigment you inherit and where it appears In the eye (more brown or blue color can be located in the center or outer edges of the eye).

Facial and body features

Some facial characteristics such as facial shape and symmetry (a raised eyebrow on one side of your face, for example) are thought to be dominant and trickle down through the generations, but hand shape, finger shape, toenail shape, and unusual features such as hair often appear with mutations. double over generations.

Fingerprint patterns have been shown to run in families, and crooked teeth can also be inherited, because the formation of the jaw and the inclination of the teeth are genetically determined.

Genetic traits of the fetus

To get a rough estimate of adult height, take the average height of the father and mother, then add two inches for a boy or subtract two inches for a girl. Other strong factors in your child’s final height are nutrition and health. If your child’s genes are programmed for 5 feet 5 inches, he may not reach to it if his diet is inadequate or if something else is interfering with his growth.

It is impossible to guess how thin or overweight your child will be. Only genes will cause the child to have a certain weight. When both parents are obese, the child is likely to be overweight too. Or a combination of both factors.

Genetics in twin pregnancies

In the case of a twin pregnancy, and with all the possible combinations of genes affecting your babies’ looks and personalities, it’s impossible to know what your baby will actually look like, but that’s part of the fun of expecting babies. You never get bored.

And after you got to know Mrs Genetic traits of the fetus You can talk to the doctor about the genetic characteristics of your fetus, and visualize an approximate form of it.