Question

) 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 running experiments on astronauts that were in space for over a year.
By analyzing changes in one twin on Earth and the other in space.
By observing changes in retired astronauts over a period of ten years

Answer 1

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.** This approach, often referred to as the "twin study," allows researchers to compare the genetic similarities of the twins while controlling for environmental differences, providing insights into how space affects human biology.