What are the determinants of your baby’s intelligence?
Every parent wants his child to be smart.
Scientists have found that in addition to the acquired intelligence, babies’ intelligence is also related to sex chromosomes.
Researchers from the University of Adelaide, the University of Leuven, Belgium, and the Wellcome Trust Sanger Institute of the University of Cambridge in the UK have found that mutations in an important segment of the human sex chromosome may cause mental development disorders.
Related research reports will be published in the February issue of the American Journal of Human Genetics.
American geneticist Getz said that in a global survey on mental health, researchers found that six members of more than 550 families had small changes in the X chromosome, and another three hadGene loss occurs on the same chromosome, and these people suffer from mental retardation.
The researchers said that although this number sounded quite low, it was actually “quite high” due to the complexity of the chromosomal changes.
The survey showed that about 30 boys or adult men were affected. They seem to be no different from ordinary people, but they have subtle symptoms of defects, that is, learning and memory functions are not working properly, which affects their normal lives.
The X chromosome is one of the two pairs of chromosomes that determine sex. Women usually have two X chromosomes, and men have one X chromosome, plus a smaller Y chromosome.
Therefore, men’s X chromosome problems are longer than women’s, but women may also become recessive carriers, inheriting the defective gene to their son.
Men are about 30% more likely to develop mental retardation than women.
The discovery also adds keyboard codes to the controversy over the role of the X chromosome in human brain function.
The DNA duplication found in the study contains two known genes, HSD17B10 and HUWE1, called “tumor suppressor genes,” which regulate the rebuilding of nerve cells.
At present, researchers have developed a test method that enables women to find out whether they carry the defective gene before pregnancy and to stop them from finding possible treatments in the future.
Researchers say there are about 800 genes on the chromosome, and about 85 genes have been found on the X chromosome to be associated with various forms of mental retardation.