The correct answer is: By analyzing changes in one twin on Earth and the other in space.
NASA conducted a unique study called the Twins Study, where they analyzed the genetic and biological differences between astronaut Scott Kelly, who spent a year in space, and his identical twin brother Mark Kelly, who stayed on Earth. By comparing the two brothers, NASA was able to distinguish genetic factors from environmental ones and identify how the body responds to living in space.
How did NASA help to distinguish genetic factors from
environmental ones when studying the effects of living
space? (1 point)
By introducing animals and other
organisms that could be studied in space.
By analyzing changes in one twin on Earth
and the other in space.
By running experiments on astronauts that
were in space for over a year.
By observing changes in retired astronauts
over a period of ten years
1 answer