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Histones are spools of proteins that surround the chromosome and control the switching on of genes. National Human Genome Research Institute. Changes made to the protein spools that surround chromosomes are passed down generations, proving that inherited traits are decided by more than just DNA, says a new study.
''One would not expect the tendency to believe in traditional values and the strict enforcement of rules to be more an inherited than learned trait,'' said David Lykken, a psychologist in the Minnesota project. ''But we found that, in some mysterious way, it is one of traits with the strongest genetic influence.''.'It implies that some aspects of personality are under a great degree of genetic control.''. The traits were measured using a personality questionnaire developed by Auke Tellegen, a psychologist at the University of Minnesota who was one of the principal researchers.