Beijing time, November 14, according to foreign media reports, our intelligence and behavior require a large number of genes to perform their best functions, and this requires considerable evolutionary pressure to maintain. Now, a research team at Stanford University in the United States proposes a very challenging theory: our intellectual and emotional abilities are being lost, because the intricate gene network that gives us brain power is particularly vulnerable to gene mutations, and these gene mutations are selected Not for us to face the problems of modern society, but because we no longer need intelligence to survive.
But we should not take the theory of mental decline seriously, because it is becoming a real problem. As technology advances, scientists may find a solution to eliminate natural selection. The internationally renowned Cell Press magazine "Genetic Trends" published the study on November 12. Research leader Dr. Gerald Crabtelli pointed out: "Before our ancestors emerged from Africa, the development of intelligence and the optimization of countless intellectual genes may have appeared in relatively dispersed non-verbal populations." Here In this environment, intelligence is crucial to survival. The huge selection pressure may act on the genes needed for intelligence development, which leads to the highest peak of human intelligence.
But these researchers say that now our intelligence is showing a downward trend, from this point of view, we are likely to begin to degenerate slowly. The development of agriculture and the process of urbanization may weaken the natural selection ability to eliminate genetic mutations that cause intellectual disabilities. By calculating the frequency of harmful gene mutations in the human genome and the hypothesis of 2,000 to 5,000 genes required for intelligence, Crabtree estimated that 3000 years-about 120 generations, all of us experienced 2 or more times on intelligence Or genetic mutations that cause harm to emotional stability. At the same time, recent findings from neurology have shown that genes related to brain function are particularly vulnerable to mutations.
Crabtelli believes that the combination of less selection pressure and a large number of susceptible genes is eroding our intellectual and emotional abilities. But the rate of loss is very slow. Crabtree firmly believes that judging from the rapid pace of social discovery and evolution, future technology will certainly solve this problem.
He said: "I think we will know every millions of human genetic mutations that may harm our intellectual function, and how each of these mutations affect each other and how they affect other processes and environments. To At that time, we may be able to magically correct genetic mutations that appear in all cells of any organism at any stage of development. Therefore, the cruel natural selection process is superfluous. "
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