Who decides height and intelligence?
Under the premise of nutritional status, 70% of a child's height is in the hands of parents, and the heredity of parents is the main factor to determine the child's height, because 35% of the factors to determine the child's height come from his father and 35% from his mother. If the parents are not tall, it depends on the baby's 30% efforts the day after tomorrow. Intelligence is inherited to a certain extent, and it is also influenced by acquired factors such as environment, nutrition and education. According to scientists' assessment, the influence of heredity on intelligence accounts for about 50%-60%. As far as heredity is concerned, mothers are smart, and most of the children born are smart. If they were boys, they would be smarter. This is because human intelligence-related genes are mainly concentrated on the X chromosome. Women have two X chromosomes, while men only have 1, so the mother's intelligence plays a more important role in heredity.
How did the boys and girls come?
The boy is XY, X (egg) comes from the mother, and Y (sperm) comes from the father.
The girl is XX, X (egg) comes from the mother, and X (sperm) comes from the father.
So it's the husband's fault to have boys and girls. Don't blame mom's stomach for disappointing. You are sure to argue with your father about whether the baby in your belly is male or female and who it looks like, right? What do you want the baby to look like? Eyes like you, nose like him? Body like you, IQ like him? Then you have to see what genes determine these.
Who decides the sex?
-Dad
Scientists at wexler Institute of Biomedicine in the United States found that it is a genetic factor that determines the sex of men and women, namely "Testicular Determinant" (TDF). As long as there is this factor on the chromosome, the embryo will form a male fetus after seven weeks, otherwise it will be a female fetus. Therefore, sex is determined by the sperm type at the moment of conception.
Ok, now you know, at least now scientific research thinks that the type of sperm determines the sex of the child, do you understand? Isn't it? So don't blame your wife. Look at yourself first.
In addition to nutritional status, 70% of children's height is in the hands of parents. The inheritance of parents is the main factor that determines his height, because 35% of the factors that determine his height come from his father and 35% from his mother. If the parents are not tall, it depends on the baby's 30% efforts the day after tomorrow.
Therefore, the statement that dad is short, mom is short and short is not necessarily correct!
Whose character is inherited?
-Dad
Character is inherited from father. Although the formation of personality has innate factors, it is mainly influenced by the day after tomorrow. Comparatively speaking, dad's influence will be greater than mom's. Among them, the role of fatherly love has a greater influence on daughters. A psychologist thinks: "Father plays an important role in the formation of his daughter's sense of self-esteem, identity and gentleness." Another expert suggested that a father can teach his daughter many important lessons and experiences in life, so as to make her character more colorful.
You have to judge whether a boy is smart or not, just look at his mother. Mother's influence on children's IQ is three times that of father!
So, if you are a boy, you feel stupid. You must marry a smart girl. In this way, your child still has a 75% chance to make a comeback, and life is still full of hope ~ If you are a girl and then you feel stupid ... Ah, well, stupid birds fly first, right? . . When you see a boy is smart, the probability that his father is smart is zero. It should be said that even if his father is smart, it will not affect him, but the probability of his mother being smart is 100%. Therefore, if you are considering marrying a very smart boy, you should be careful of his mother, who may be a calculating mother-in-law.
chest
There are certain factors, just like big breasts are hereditary, but not entirely. In fact, it is also related to the food eaten during adolescence and the usual diet. It might help if you do more breast massage yourself.
In fact, the size of breasts is not very important. I think it's actually better for girls to have a small breast shop (although it would be sexy to be bigger). And young girls will feel less pressure, and everything will be easy, which will cause great distress.
Leg shape
Those legs that resemble parents' fat accumulation can be shaped into slender and strong legs through adequate exercise. But if the leg is too long or too short because of heredity, it can't be remolded, so we have to let it be.
fat
It will make children have a 53% chance of becoming obese. If one parent is obese, the probability of children being obese will drop to 40%. This shows that about half of being fat can be determined by human factors. Therefore, parents can make their posture symmetrical through reasonable diet and adequate exercise.
The creator seems to favor women and only let baldness pass on to men. For example, if the father is bald, the probability of passing it on to his son is 50%, and even the mother's father will leave his 25% probability of baldness to his grandchildren. This sexual genetic tendency of passing on men but not women makes men very helpless.
acne
This facial syndrome, which worries both boys and girls, is actually related to heredity. Because if both parents have suffered from acne, the prevalence rate of children will be 20 times higher than that of children without family history.
situation
Always follow the natural law of "average after multiplication", leaving people no choice. If parents have dark skin, there will never be children with white skin; If one person is white and the other is black, most of them will give their children a "neutral" skin color, and some will be more inclined to one side.
eye
The shape and size of children's eyes are inherited from their parents, and big eyes are dominant over small eyes. If one of the parents has big eyes, the child with big eyes may be bigger.
Double-fold eyelids
Double eyelids are dominant inheritance, and the life baby with single eyelids and double eyelids is very likely to be double eyelids. But both parents have single eyelids, and the average child also has single eyelids.
Compared with light color, dark color such as black is dominant inheritance. In other words, people with black eyes and blue eyes don't have blue eyes.
eyelash
Long eyelashes are also dominant. As long as one parent has long eyelashes, children are likely to inherit long eyelashes.
nose
Generally speaking, the nose is big and high, and the nostril width is dominant. If one of the parents has a straight nose, it is likely to be passed on to the child. The inheritance of the nose will continue into adulthood. The nose is short when you are a child and high when you are an adult.
ear
The shape of the ear is inherited, and the big ear is dominant over the small ear. As long as one parent has big ears, then the child is likely to have a pair of big ears.
upper jaw bone
It is dominant inheritance and cannot be "discussed". Either parent has a prominent chin, and children often have similar chins without exception, which is somewhat bizarre.