As per the NASA study two brothers Scott Kelly and Mark are identical twins. The space agency has sent Scott Kelly into space for 340 days on the International Space station and Mark stayed on earth for observance.
Upon the Kelly return from space the tests revealed that the gene data of DNA in chromosomes changed its shape. While considering there are several factors influenced like oxygen deprivation stress, increased inflammation and a restricted diet, returned to their pre-flight state.
Researchers claimed that 7% of the genes in Scott Kelly body known as space genes. Now 93% of Scott’s genes returned to normal after landing. As for longer time period most of the changes occurred in DNA, mitochondria, immune system and bone formation.
In its report NASA said: “Whole-genome sequencing showed each twin has hundreds of unique mutations in their genome, more than expected, and some were found only after spaceflight, circulating in the blood as “cell-free DNA.
“This is thought to be from the stresses of space travel, which can cause changes in a cell’s biological pathways and ejection of DNA and RNA. Such actions can trigger the assembly of new molecules, like a fat or protein, cellular degradation; and can turn genes on and off, which change cellular function”.
“Significant responses were found for at least five biological pathways in Scott during his time in space. These responses are important for future missions.”
The Twins Study has profited NASA by giving the primary utilization of genomics to assess potential dangers to the human body in space. The NASA Twins Study additionally exhibited an extraordinary open door for examiners to work together, taking an interest in a group way to deal with HRP investigate.