With the continuous development of modern society, due to the unreasonable eye use habits, diet and the popularity of electronic products, many children are short-sighted since childhood, which makes parents very upset. Apart from the factors of the day after tomorrow, if parents are highly short-sighted, will they be passed on to the next generation?
In the general population of our country, about 1 / 5 of them are carriers of myopic gene.
High myopia is an autosomal recessive genetic disease, that is, a pair of genes related to myopia are pathogenic genes of the disease. If only one gene is pathogenic, and the other gene is normal, it will not be pathogenic, just the carrier of the pathogenic gene. For example, parents are not myopic, but they are all carriers of high myopia gene. They do not show myopia in themselves, but their pathogenic genes are passed on to their children, so that the children have two genes of myopia, so that the children become myopic.
The incidence of children's disease is more than 90% when men with high myopia combine with women with high myopia. If combined with the myopic gene carrier, half of the children may be highly myopic, while with the normal vision or low and medium myopia, the chance of the children's myopia is 1 / 10.
Little knowledge
Eye shape is inherited, and large eyes are dominant relative to small eyes. This is undoubtedly a happy thing for people with small eyes. No matter how they are, as long as their spouse has big eyes, they are more likely to have big eyes.
If you are born with one eyelid, don't worry too much, it may change. According to statistics, children's double eyelids are only 20%, middle school students are 40%, and college students are about 50%.
The inheritance of eyeball color follows: the dark color is dominant. That is to say, if you envy blue eyes, even if you choose the blue eyes lover, but because you are black eyes, your baby will not be blue eyes.
Long eyelashes are also dominant.
Skin color parents are black skin, children can not white skin
The son of a father with a sharp chin, nine out of ten, is also a sharp chin;
70% of height is inherited from parents;
Parents are fat, 53% of children are little fat;
Baldness: more than 50% of them are inherited, and can be inherited through generations;
Voice: boys are inherited from fathers, girls are like mothers.