Tag Archives: expression of that gene

Scott Kelly floated around space in the International Space Station for a year and was obviously different from Mark Kelly, his identical twin – he was taller. (Science Oct 28, 2017) The brothers pioneered a NASA Twins Study which compared Mark’s grounded lifestyle with Scott’s spaceflight journey.  The scientists discovered an increase in Scott’s methylation rate – a process that turns gene activity on and off. “There are over 50,000 genes in the human genome, and when floating in zero…..

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