Harvard University scientists have identified a virtual “speed limit” on the rate of molecular evolution in organisms, and the magic number appears to be 6 mutations per genome per generation — a level beyond which species run the strong risk of extinction as their genomes lose stability.
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An international team of researchers including an MIT graduate student has demonstrated for the first time that genes exert influence on people’s behavior in a very common experimental economic game. Traditionally, social scientists have been quite hesitant to acknowledge a role for genes in explaining economic behavior. But a study by David Cesarini, a Ph.D.
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Do gene variants that convey risk for schizophrenia affect apparently healthy individuals?Although these genes are present in every human, individuals may have different versions of these genes, called alleles. While many people who possess these “risk alleles” do not end up with schizophrenia, this does not mean they are unaffected by the presence of the risk allele.
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