With the popularity of "Where Did Daddy Go 4", the lives of "grassroots" small Internet celebrities Ala Lei and Li Yihang have attracted much attention -
In addition to whether there is a rich father, what makes netizens more interested is what their parents look like? Does it also have the face of an angel and the figure of a devil?
And in life, we always like to look in the mirror to compare ourselves and our children's appearance: where is the father? Where is it like Mom?
When we always want to explore the mysteries of genes, in fact, the director of the Department of Genetics and Metabolism of Hunan Children's Hospital already has the answer! Don't believe it, listen to what he said —
Knowledge |
Children like who, parent genes first "pk"
Some netizens asked, if the child is a mixed race, whether the degree of mixed blood is "European" or "Asian", it depends on the parents' genes who are more powerful. According to this statement, who is the child like, is the parent's gene pk first?
"It makes sense that whoever is genetically strong will be more like whom." He Xinyu, director of the Department of Genetics and Metabolism at Hunan Children's Hospital, believes that there is a folk saying that daughters are like fathers and sons are like mothers. This can be explained, first of all, the daughter has two X chromosomes, one from the mother and one from the father. The father-like X chromosome on the daughter is activated, and the daughter's X chromosome like the mother's may be silent at this time. Then, the daughter is likely to be like the father. This suggests that the expression of this X chromosome may be more pronounced. It is better explained for the son, because the son's y chromosome must come from the father, and the other X chromosome is from the mother, and the X chromosome is relatively large, then the probability of the son being like the mother will also be very large. But there are no absolutes in the world, and there are indeed daughters who are very much like their mothers, and there are sons who are very similar to their fathers.
Why children are not like parents, more like aunts or uncles
"There are a lot of cases." He Xinyu introduced that the child's father and his brother share 50% of the same genetic factors, and the same is true for the child's mother. The child's parents share 50% of the same genetic factors as the child. So the child shares 25% of the same genetic factors as the uncle or aunt. Therefore, according to genetic analysis, there is no problem for a child to look more like an uncle or aunt.
In addition, because the dominant expression inherited by the grandmother's grandfather to the son may be recessive expression to the daughter, and the daughter gives birth to offspring, and the offspring inherits the mother's unexpressed part of the expression, and the "nephew will be more like the uncle", and the saying is established.
Interesting things |
Eye genetics: half of the parents
There are rumors on the Internet that the child's eyes inherit the father, so that some small-eyed fathers are very worried. But what are the facts? He Xinyu told reporters that most of the genes of the child's eyes are half from the father and half from the mother. If the parents' eyes are large, then the child's chance of large eyes will be higher, but it does not rule out the possibility of having a child with small eyes. However, if the parent's eyes are large and the other is small, it is likely to be the "neutralization of the two", and the other possibility is that the dominant genetic factor is at play, "the parent's gene wins, and the child is more like whom." ”
Nose genetics: there is "survival of the fittest"
Many people are not satisfied with their noses, go to plastic surgery, make the nose a little more erect. So, who decides whether a child's nose is very good or not? He Xinyu told reporters that this is determined by the "survival of the fittest" inherited by his parents.
Usually, the nose of the Easterners is not as stiff as the nose of the Westerners, which is determined by the characteristics of the race. But putting aside the issue of race, who is more powerful in the genetic genes of parents is also particularly obvious to the inheritance of children's noses, "there is an advantageous inheritance of nose inheritance, that is, whose genetic genes are more dominant will be inherited to whom." But from the results of the study, the child's nose genetics will be more biased towards the mother. ”
Height genetics: 80% is related to the average of the parents
There is a saying circulating on the Internet, "The father is high, the mother is high." However, He Xinyu told reporters that this statement is not accurate.
"80% of a child's height is inherited from their parents, and 20% is influenced by the acquired environment." He Xinyu said that just looking at the genetic factors of the parents, if the parents are high, the child will be high; and if the parents are not high, the probability of the child growing tall will be very low, and the specific genetic factors have a lot to do with the average height of the parents.
In addition, the influence of environmental factors on height is also quite important. Well-nourished children always grow taller than malnourished children; children with good sleep quality grow taller than children with poor sleep quality; children with precocious puberty grow taller; children with short sunshine hours grow taller. Therefore, He Xinyu suggested that if parents want their children to grow tall, they must let their children develop good living habits and not be picky about eating to ensure adequate nutrition; go to bed early and get up early to ensure adequate sleep.
Fat skinny inheritance: there is a genetic orientation
In this society where thinness is beautiful, we all want to be thinner, and we don't want our children to grow fat, so what is the decision of the child's fat and thin? He Xinyu believes that, first of all, the fat and thin of parents will be inherited to their children. If the parents are fat, the child will also be relatively fat, like the child Wang Shiling in "Daddy 1", because the parents are easy to fat physique, so she is also relatively fat than the children of the same age.
In addition, when the child is young, the parents feed differently, which can also affect the fat and thin. Children who are over-nourished will also have larger unflogable fat cells, and fat cells will not decrease with age, so the more such children grow, the easier they are to gain weight. He Xinyu suggested that parents must pay attention to the right amount of feeding their children, and do not think that the children will let the children eat as much as possible when they grow up.
Who are your children more like? Radio
0 people 0% a. Dad
0 people 0% b. Mom
0 people 0% c. aunt or aunt
0 people 0% d. uncle or uncle
0 people 0% e. No one is like voting
Text: Today's Women's Daily/Fengwang Reporter Li Shiyun Correspondent Yao Jiaqi
EDIT: Small y