Look at the baby's big eyes, exactly the same as her mother; the baby's dark skin is the same as her father when he was a child... Are these "hereditary marks" jokes, or is there a little reason?
gene inheritance is both magical and complex. In order to find out, Wenwen’s father has consulted a lot of information and listened to many expert lectures in the fields of genetics and brain science . For whom the gene of the couple determines the child’s IQ and appearance? Finally, I have some insights and share them with everyone.
01. Is the child’s IQ inherited from the father or mother?
Whether it is the expert's narration or the information found, it shows that the genes of parents have a great impact on children's IQ!
Researchers also found that as a person grows older, the role of innate genetic factors on intelligence is becoming more and more important. The difference in IQ between infants and young children only accounts for 20%, the difference in genetic factors account for about 40%, and the difference in adults exceeds 60% of .
Seeing this discovery, Wenwen’s father couldn’t help but wonder: After applying for so many educational and brain-development courses for his daughter, are they all paid IQ tax?
A brain science expert said that the purpose and significance of the brain development courses on the market are to make the IQ reach the genetic ceiling as much as possible.
There were researchers who randomly surveyed middle-class adults in a developed country and found that their IQ gap was large. The main reason for this huge gap is heredity! No wonder some people always say that "Smart and capable people always come from one family" , and maybe there is some truth!
At this time, you may ask: children’s IQ is the inheritance of more dads or moms?
There is a view that: there are two X chromosome in the daughter's body, from her father and mother, respectively; while there is only 1 , from her mother.
So, some people say that children’s IQ is mainly followed by their mothers! But what is overlooked is that there are many genes on the X chromosome that affect brain development. Whether these genes are of high quality or inferior quality will also affect the child's IQ.
Later, after a long period of statistical analysis, some researchers found that the point coefficients related to the intelligence between parents and children were around 0.4, while the father and the child were 0.423; the mother and the child were 0.464.
Judging from this point coefficient table, the influence of mother seems to be so much more. But in general, the IQ of the child is still the joint function of parents, so don’t try to blame the father!
02. Who affects the appearance of the child?
Colleague Lili is tall, fair-skinned, and has big eyes and bright eyes; while her daughter has small eyes and a collapsed nose, her whole face is like a bun, and she can't even say she is cute.
But her son perfectly inherited her excellent genes, with big eyes, high nose bridge, fair skin, and very cute.
For this reason, Lili often complains, complaining that her husband's appearance has lowered her daughter, saying, "The daughter looks like a father, and the son looks like a mother." Is this really true?
From a genetic perspective, a child's facial features, such as big eyes, big ears, high nose bridge, pointed chin, etc., all belong to dominant genetic . As long as one parent has it, the child can inherit it. But in real life, for some reason, small eyes and a collapsed nose bridge seem to be better.
Just like the daughter of Lili's family, her mother is obviously good-looking, but when she is inherited, she always passes by these high-value genes.
Let’s take a look at the specific situation. The impact of parents’ genetic gene on the child’s appearance:
① Skin, parents’ skin color multiplied by the average
Whether a child looks white or black is closely related to the parents’ skin color. The rules of inheriting skin color will follow: multiply the skin color of parents and then average it.
Wenwen's father's family of three is in line with this rule: I have dark skin, my wife has fair skin, and my daughter's skin is between us.
The sister and brother-in-law both have white skin, and the son she gave birth to has a skin that is several degrees whiter than the daughter.
Studies have found that children's skin color is deeply affected by their parents' skin color, and the heritability of accounts for between 63% and 72%. It can be said that it mainly depends on inheritance.
Although skin color is determined by genetics, taking sun protection the day after tomorrow will also help improve skin color.
②Hair volume: It is said that men do not pass through women
According to research, the hair volume problem has always been said that men do not pass through women! If the father has thin hair, 50% of the son may become bald.
Speaking of this issue, Wenwen’s father has the most say. There are no men in the family who are not bald. Grandpa, dad, me, and younger brother are all "Mediterranean" head shapes; while sisters have long black hair.
In addition, looking at the men of the British royal family, the ancestral bald head is like using machine gun , and no prince can escape.
But girls should not be too happy too early. After giving birth, the speed of hair loss is also very good!
③Height: Parents inherited together, each accounting for 35%
In terms of the influence of children's height, parents can be said to have become a "draw", and their respective genes account for 35%.
In other words, whether the legs of children are too long or too long or a means of transportation is positively related to whether their parents are "providing them well".
One sentence summary: Parents are tall, and children are tall; parents are short, and children cannot be tall. If the child does not have a genetic advantage, he will have to run hard the day after tomorrow.
For children who are "congenital short" in their children, they can work hard on diet, nutrition, exercise, and sleep. They should grasp the 30% factor and strive to grow to an average height.
④ Obesity, dominated by genetics
A sentence circulated in the weight loss world: A fat destroys everything! It can be seen that figure is also an important factor affecting appearance.
According to research, is obese, and is also dominated by genetics! has found that if parents are both "fat people", the probability of a child becoming a fat man is 50%-60%;
If either parent is a "fat person", the probability of a child becoming a fat man is 30%;
My parents are both big fat men over 150, and my sister is a slightly fat man over 130; and I have to pass on the extra flesh to my daughter with my own efforts and maintain a weight of 120.
In general, both the IQ and appearance of the child are closely related to the parents' genetic genes. In addition, there is one of the most heart-wrenching dominant inheritance. According to research, it is found that is rich or poor, and is the most dominant genetic gene in humans! What do you think?
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