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
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.
NASA helped to distinguish genetic factors from environmental ones when studying the effects of living space by analyzing changes in one twin on Earth and the other in space.
To determine the effects of living in space on genetic and environmental factors, NASA used a specific method. The correct answer is "By analyzing changes in one twin on Earth and the other in space."
NASA conducted a unique study known as the NASA Twins Study to investigate the long-term impacts of space travel on the human body. The study involved comparing the physical and physiological changes between astronaut Scott Kelly, who spent a year in space, and his twin brother Mark Kelly, who remained on Earth.
By using twins, NASA could control for genetic factors, as both brothers share the same genes. Any differences observed between them could be attributed to the effects of living in space. This approach allowed scientists to distinguish between the influence of genetics and environmental factors in space-related changes.
Throughout the study, various tests and measurements were conducted on both twins before, during, and after Scott's mission in space. This comprehensive examination encompassed physical, mental, and genetic evaluations, enabling NASA to gain insights into the impacts of prolonged space travel on the human body.
So, in this case, NASA differentiated genetic factors from environmental ones by analyzing changes in one twin on Earth (Mark) and the other in space (Scott).