Intelligence can be inherited from the mother? Science Explains
Smart people should thank their mothers because, according to science, this trait is inherited from the mother's side. Over the decades, several studies on the subject have been conducted showing that it is mothers who transmit most of the genetic load related to cognitive abilities to their children.
American researcher Robert Lehrke, author of the book Sex Linkage of Intelligence , says that a large part of the children's intellectual capacity is generated on the X chromosome, which indicates that women are twice as likely to pass on intelligence-related characteristics to their children , for having twice the same X chromosome.
A recent study by the University of Ulm in Germany found that brain damage is linked to the same chromosome. The evidence for this is the fact that mental and intellectual impairments are 30% more common in men.
However, the most extensive study on the relationship between mother's genes and intelligence was made by the "Social MRC and Public Health Sciences Unit, in the United States. More than 12,000 young people between 13 and 22 years of age were interviewed, analyzing different variables about individuals, such as skin color or sociocultural and economic level.
The researchers concluded that the common indicator that evaluated the person's intelligence was her mother's IQ. It is believed that about 50% of intelligence comes from inherited genes. Intelligence is a person's ability for logic, memorization, understanding, self-knowledge, communication, learning, emotional control, planning, and problem solving.
Older research reinforces this thesis
Research on the subject began in 1984 by researchers at the University of Cambridge in the United Kingdom who, during an analysis of biochemical and genetic components, found that the genes of mothers provide more information for the development of brain structures associated with the way we think.
In this way, the researchers decided perform experiments with mouse embryos, modifying them to reproduce only the genes of the mother or the father. The surprise came when the embryos were transferred back into the uterus and died. Thus, the researchers realized the existence of conditioned genes that activate only when they are inherited by maternal pathways, which are essential for the development and survival of the embryo . With the embryos that were genetic copies of the parents something different happened: their genes were crucial for the growth of the placenta tissues, but these also died.
During the research it was also verified that the rats that had a greater proportion of maternal genes developed an abnormally large brain and their bodies were much smaller. The researchers found no paternal cells in the cerebral cortex, where structures allow us to use more complex cognitive functions such as intelligence, decision-making, language, and language. other skills.
The scene is known to nine out of ten mothers: after hours on the stove, preparing the perfect meal for the puppy, he simply refuses to experiment. You make a little airplane, put a funny face on the plate, use all your lip, make up stories, promise worlds and bottoms if he tries ... but that baby so cute turns out to be a stubborn little monster that does not take his hand from the front of his mouth.
The results show that individuals who had parents separated and who had not spoken for years were three times more likely to become ill, compared to those who had parents separated but who remained in contact during the growth of their children. " " Stressful experiences in early life do something with our physio lymphoma and inflammatory processes that increases the risk of weaker health and chronic diseases, "said Michael Murphy, associate of postdoctoral research in psychology at Carnegie Mellon University.