How did NASA help to distinguish genetic factors from environmental ones when studying the effects of living space? (1 point)
• 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.
• 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.
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 factors versus environmental factors, NASA implemented various approaches. One of the methods they used was analyzing changes in one twin who remained on Earth while the other twin went to space. By comparing the genetic and physiological data of the twin in space with the twin on Earth, NASA could identify which changes were specifically due to the space environment.
Therefore, the correct answer is:
- By analyzing changes in one twin on Earth and the other in space. (1 point)