As the saying goes, dragon begets dragon and phoenix begets phoenix, and mouse’s son can make holes.
As a kind of animal, human beings naturally hope their children [win at the starting line], so the problem arises:
Will our shortcomings be passed on to our children, which is not good for them?
In fact, this question is really too big, and Dr. Clove can only answer it bit by bit.
Can intelligence be inherited?
Like height, IQ is determined by many factors, genetic and environmental factors are very important.
There are some differences in IQ among different races. For example, the average IQ of Jews is between 112 and 115, which is higher than that of other races. This is also one of the important reasons why Jews, who only account for 0.2% of the human population, won 20% of the Nobel Prize.
40% of childhood IQ is determined by genetic factors. If both parents are high IQ people (IQ > 125, accounting for less than 5% of the population), then children also have a high probability of high IQ.
However, the development of the brain is much more complicated than the development of height (bone). At present, the medical profession still does not know the specific physiological mechanism and cannot control the development of intelligence. We know only two things exactly:
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The genes of both father and mother have an impact on the formation of children’s intelligence, and the mother may be slightly larger.
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Intelligence depends not only on congenital factors, but also on acquired family environment and school education.
Therefore, if you want your children to be smarter, besides their parents are not stupid, you should also create a good family atmosphere and learning environment for your children.
Don’t forget, parents’ words and deeds are actually the starting line.
Is height inherited?
Although acquired nutrition and exercise can affect height, congenital heredity is still an important factor affecting height.
Take Yao Ming’s family as an example. Yao Ming is 226 cm tall, Yao Ming’s wife Ye Li is 190 cm tall, and Yao Ming’s 7-year-old daughter Yao Qinlei is nearly 140 cm tall.
According to estimates, 60% ~ 80% of the height difference is determined by genes, while the remaining 20% ~ 40% is attributed to environmental factors (such as acquired nutrition).
In addition, ethnic differences determine the probability that height is affected by genes. For example, the probability that Asian height is affected by genes is about 65%, which is lower than that of white people in Europe and the United States. This is also the reason why some people fail to apply the [formula for parents’ height to estimate children’s height].
Of course, in addition to genetic factors, acquired nutrition and exercise will also affect human height.
In China, many junior and senior high school students after 00 are much higher than their parents when they were the same age. One of the most important reasons is that their dietary and nutritional status is much better than before.
Is obesity inherited?
Epidemiological research results tell us that obesity is closely related to heredity.
If both parents are obese, then children have an 80% probability of being obese. On the contrary, if both parties are of normal weight, the probability of children suffering from obesity is not more than 10%.
In the evolutionary history of human beings, carrying obesity genes may be a good thing. For example, most people did not have enough to eat before the 20th century. It is necessary to convert food into fat and store it.
However, our life is better today. Obesity genes often mean a higher risk of cardiovascular diseases. Let’s lose weight.
Is color blindness inherited?
There are many types of color blindness, including full color blindness and partial color blindness, while the more common is red-green blindness in partial color blindness, i.e. Red and green cannot be distinguished.
Red-green blindness is a recessive genetic disease with X chromosome, which has two characteristics:
1. Gender-related
Men are far more red-green blind than women.
2. Invisible heredity
It means that both parents have normal eyesight and children may be color blind.
If the mother is color blind, then her daughter has a 50% probability of being color blind, while her son must be color blind.
Can breast size be inherited?
Heredity, age, lactation and fat and thin degree will all affect breast size, and genetic factors are the key point.
According to the statistics of twin population, the genetic correlation of breast size is about 50% ~ 60%, which shows that the relationship between female breast size and mother is still relatively large.
For adult women, massage, papaya and other methods that want to change breast size in a short period of time (except for lactation changes) do not work. The only effective method may be plastic surgery.
Is alopecia hereditary?
There is a common saying that alopecia is [maternal inheritance]. If the men in the mother’s family (such as grandparents and uncles) are bald, then the child may lose hair.
However, this statement has not been strictly confirmed in medicine at present. What we know at present is that the gene of alopecia comes from both parents, and alopecia is determined by multiple genes and environment.
In other words, even if parents do not lose their hair, their children may still lose their hair.
Fortunately, there are still ways to control alopecia. The earlier the treatment, the better the effect. If you have the potential to become a [extremely real man], you should see a dermatologist as soon as possible.