This article explores various aspects of human brain development and social evolution, including the role of gene expression in specialization, the influence of group size and mating preferences on voice evolution, and the impact of aging on social preferences. It also touches upon the unique human gene ARHGAP11B and the effects of space travel on brain cell maturity.
Humans like to discover. Presented with something we've never seen before, most of us will be compelled to explore and learn more about it. The same can't exactly be said for our closest living relatives, primates. New research suggests that group size and mating preferences may have caused male primates, including humans, to evolve deeper voices than females. The findings can help to shed light on social behavior in humans and their evolution.
ARHGAP11B -- this complex name is given to a gene that is unique to humans and plays an essential role in the development of the neocortex. The neocortex is the part of the brain to which we owe our complex cognitive abilities. When humans age, they tend to favor small circles of meaningful, already established friendships rather than seek new ones. People are also more likely to lean toward positive relationships rather than negative ones. Brain Cells Remain Healthy After a Month on the International Space Station, but Mature Faster Than Brain Cells on Earth
HUMAN BRAIN GENETICS EVOLUTION SOCIAL BEHAVIOR AGING
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