Does a child look like his father or mother? Genetics explains how children inherit their appearance

Some parents will study which parent their baby looks more like after the baby is born. Today, we will tell you how to use scientific methods to determine which parent your baby looks more like. Parents who are interested in their baby's genetics can read the detailed introduction below.

Who does the child look like?

In theory, we inherit an equal number of genes from our father and mother, and who we look like depends on how much those genes mix. But the idea that children take after their fathers has a slight edge, supported by evolutionary arguments and laboratory studies.

First is the theory of evolution. This theory holds that in the process of human evolution, after a child is born, the mother will definitely know that the child is hers, but the father cannot be sure that the child is his. From the perspective of selfishness and maintaining family bloodline, the father will give all resources to his child to be sure that it is his. The only reliable criterion is that the child looks like his own. Thousands of years of evolution will favor children who look more like their fathers.

Another theory supporting the idea that children resemble their father more is that although children inherit an equal number of genes from their father and mother at conception, more of the father's genes are used when these genes are used, a finding from laboratory studies.

Who does the baby inherit more of his personality from?

Among the factors that affect a child's personality, genetic genes account for 50% and environmental factors account for 50%. Before the baby is born, the mother's egg quality is relatively large, and the fertilized egg grows in the mother's body for 10 months and has a longer contact time with the mother, which will cause the mother to have a greater influence on the child's personality. But this is not inevitable. If the father's sperm quality is relatively higher, then his contribution to the child's personality will also be greater.

When your baby is born, the impact of environmental factors becomes even greater. On the one hand, the season when the child is born and the family atmosphere will affect the formation of the child's personality; on the other hand, in the process of shaping the baby's personality, the personality expression and way of thinking of the parents as the child's first role model is also a positive factor.

Therefore, it can be said that the character of the parents determines the character of the child, especially the first three years after the baby is born. The so-called "three years old can tell a person's future", is very critical to the shaping of the child's character. When the child reaches the age of 7, his or her personality is basically set.

Whose appearance is inherited?

——Analyze specific issues in specific ways

Skin color: It always follows the natural law of "multiplying and averaging", leaving no choice. If the parents have darker skin, they will never have fair-skinned children; if one parent is white and the other dark, most of the time the children will have a "neutral" skin color, but there are also cases where they are more biased towards one side.

Eye:

(Eye shape) The shape and size of a child's eyes are inherited from both parents. Big eyes are dominant over small eyes. If one of the parents has big eyes, the child is more likely to be big.

(Double eyelids) Double eyelids are dominantly inherited, and the baby born to a parent with single eyelids and double eyelids is very likely to have double eyelids. But if both parents have single eyelids, the child will generally also have single eyelids.

(Eye color) Dark colors such as black are dominant over light colors. That is, if a person with black eyes and a person with blue eyes gives birth to a child with blue eyes, it will not be possible for the child to have blue eyes.

(Eyelashes) Long eyelashes are also dominant. If one of the parents has long eyelashes, the child is very likely to inherit long eyelashes.

Nose: Generally speaking, a big, high nose with wide nostrils is dominant. If one of the parents has a straight nose, the child is likely to inherit it. The genetic gene for the nose will last until adulthood. A short nose in childhood may become a high nose in adulthood.

Ears: The shape of the ears is hereditary, and large ears are dominant over small ears. If one of the parents has large ears, then the child is very likely to also have large ears.

Jaw: It is a dominant trait that cannot be "negotiated". If either parent has a prominent chin, the children will have a similar chin without exception, and the "resemblance" is somewhat bizarre.

Obesity: Children have a 53% chance of becoming obese. If one parent is obese, the probability of the child becoming obese drops to 40%. This shows that about half of whether a child is obese or not can be determined by human factors. Therefore, parents can make themselves fit through a reasonable diet and adequate exercise.

Baldness: God seems to favor women, allowing baldness to be passed on only to men. For example, if the father is bald, there is a 50% chance that the baldness will be passed on to the son. Even the mother's father will leave a 25% chance of baldness to his grandchildren. This gender inheritance tendency of passing on the baldness to men but not to women leaves men helpless.

Acne: This facial disease that worries young boys and girls is actually related to heredity. If both parents have suffered from acne, the incidence rate of their children will be 20 times higher than that of those without a family history.

Leg shape: If you have a pair of fat-stacked legs like your parents, you can definitely shape them into long and strong legs through adequate exercise. However, if your legs are too long or too short due to genetics, you can't shape them anymore and can only let nature take its course.