They say nephews look like uncles. What is the scientific basis for this statement?

In daily life, we often see such interesting things: when others praise a child for being good-looking, grandma will happily say that the child's eyebrows are as thick and thick as his father's; Eyes and dad, big eyes and double eyelids looking at the spirit and so on; But when the child loses his temper and cries, grandma can't help but say angrily. This bad temper is really unlike your father, and I don't know who to learn from. The child's mother looked helpless beside her. All the good things are with your son, and all the bad things are with me.

We know that children's height, looks and IQ are all influenced by their parents. But which is influenced by father and which is influenced by mother?

1, height

Some people say: dad has a nest and mom has a nest. That height must be greatly influenced by dad. But is there a scientific basis for this sentence?

Not exactly. The influence of parental inheritance on children's height accounts for about 70%. Among these 70%, parents account for 50% and 50% respectively. There is no question of who is in the dominant position and who is in the secondary position.

2. IQ

Geneticists say that among all the factors that affect intelligence, genetic factors account for 50%~60%. Moreover, intelligence genes are basically distributed on the X chromosome. Therefore, the mother's influence on the baby's intelligence is still relatively large. The IQ of boys comes from their mothers, while that of girls is influenced by their parents.

3. Personality

Although the main factors affecting children's personality are the acquired environment and the cultivation of parents, heredity also accounts for some factors. Among these factors, the father's genes have a greater influence on the child's personality than the mother's genes. In other words, the father has a greater influence on the child's personality, so the father must not be absent during the child's growth.

Step 4 show up

There is a saying in life that nieces are like aunts and nephews like uncles. In fact, children are still like their parents, while uncles and aunts are their parents' brothers and sisters. There are similarities between the two, so there is such a saying.

Every parent wants his child to have a pair of beautiful big eyes and a towering nose when he grows up. In fact, these are all inherited from parents. Big eyes and high nose are dominant genes. As long as one parent has such characteristics, the possibility of big eyes and high nose bridge will be much higher. There are also big ears that look blessed, which are also dominant genes.

These good genes, such as big eyes and high nose, will be passed on to children. Can bad genes be inherited?

Yes! Like acne. If one of the parents has ever had acne, then the chances of a child having acne in the future will be 20 times higher than that of a child whose parents have no acne!