Having a smart baby is the greatest hope of parents. And once they have a smart baby, the parents quit again, and they have a strong argument about it, the purpose of the argument is that the baby is smart mainly with who. Although it may seem boring, but we all want to know, smart baby, whether it is with the father, or with the mother? That is, whether a child’s IQ is inherited from the mother or the father. It is true that IQ is inherited to a certain extent, but it is also affected by the environment, nutrition, education and other acquired factors. According to scientists’ assessment, the influence of heredity on IQ can reach more than half. As far as heredity itself is concerned, a child’s IQ should be mainly inherited from the mother because most of the genes determining intelligence in human beings are centered on the X chromosome, whereas the mother only provides the X chromosome, and the father chooses one of the two chromosomes, either the X or the Y. Therefore, the mother is more authoritative in the inheritance of a boy’s intelligence. But if it’s a daughter, then it’s not certain that the child’s IQ is inherited from the mother. If the daughter has a higher IQ, it also has a share of the father. Innate factors account for more than half of a child’s IQ, but the influence of acquired factors cannot be ignored. In the case of a boy, he may be more influenced by his mother’s heredity, but in his later development, he should be more influenced by his father’s. This is due to the fact that the father has a greater influence on the child in his later life. This is due to the great role that the father plays in the child’s later life, and the perspective that he assumes. Of course the mother has some influence in the later factors, but overall it is not as much as the father. It doesn’t make much sense to argue in front of the child about who the IQ follows. There is no parent who doesn’t love their children and want them to grow up smart and healthy.