CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -There is no one “IQ gene, ” but the study, published in Nature Genetics, is precise enough to determine that there are at least 22 specific genes related to intelligence. The researchers analyzed intelligence test scores and the complete genomes of over 78, 000 people.

Detailed explanation-2: -Intelligence in the normal range is a polygenic trait, meaning that it is influenced by more than one gene, and in the case of intelligence at least 500 genes. Further, explaining the similarity in IQ of closely related persons requires careful study because environmental factors may be correlated with genetic factors.

Detailed explanation-3: -Researchers have previously shown that a person’s IQ is highly influenced by genetic factors, and have even identified certain genes that play a role. They’ve also shown that performance in school has genetic factors. But it’s been unclear whether the same genes that influence IQ also influence grades and test scores.

Detailed explanation-4: -Intelligence is highly heritable and predicts important educational, occupational and health outcomes better than any other trait. Recent genome-wide association studies have successfully identified inherited genome sequence differences that account for 20% of the 50% heritability of intelligence.