According to the researchers, the genetics of the mother determines how the smart kids, and the parent genes.
Intelligence is inherited the X-chromosome, their women have two and men only one. But in addition to this, scientists believe that genes for enhanced cognitive functions, inherited from his father, can be automatically disengaged, informs Rus.Media.
It is believed that a category of genes known as “conditional genes”, only work if come from mother. It is believed that intelligence refers to conditional genes to be passed from the mother.
Laboratory studies on genetically modified mice showed that subjects with an extra dose of maternal genes to develop large heads and brains, but the body is small. Mice that were implanted an extra dose of parental genes had small brains and larger bodies.
Researchers have identified the cells that contained only the maternal or paternal genes in six different parts of the mouse brain that control various cognitive functions, from eating habits to memory.
Cells from the parental genes accumulate in parts of the limbic system, which is responsible for functions such as reproduction, nutrition, and aggression. But the researchers found no parent cells in the cortex where advanced cognitive functions such as reasoning, thought, language and planning.
Concerned that people don’t like mice, researchers in Glasgow approached the study from the point of view of the person. They found that the theory that is extrapolated from studies on mice to confirm that the survey, which is conducted every year since 1994. Based on the survey of 12 686 young people aged 14 to 22 years, researchers found that regardless of education of participants, their race or socio-economic status, the best predictor of intelligence IQ was maternal.
However, the study also emphasizes that genetics is not the only determining factor of intelligence — only 40-60% of intelligence is estimated to be inherited, the rest depends on environmental conditions.
Researchers from the University of Washington found that a secure emotional bond between mother and child is crucial for the growth of some parts of the brain. After analyzing the group of mothers treated their children for seven years, the researchers found that the children who received emotional support, and satisfy their intellectual needs, had 30% more of the hippocampus in age 13, than children whose mothers were emotionally distant. The hippocampus — the brain region associated with memory, learning and stress response.
It is believed that a strong relationship with the mother gives the child the sense of security that allows him to explore the world and confidently to solve problems. In addition, dedicated, caring mothers usually help children to solve problems, and help them develop their potential.
Of course, parents play an equally important role as mothers. The researchers note that a vast array of other genes, which are responsible for intuition, emotions, and can be inherited from the father, is also the key to unlocking the potential of intelligence.