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How did NASA help to distinguish genetic factors from environmen ones when studying the effects of living space? ( 7 point) By obsenving changes in retired astronauts over a period of ten years. By running experiments on astronauts that were in space for over a year. By analvaing changes in one twin on Earth and the other in space. By introducing animals and other organisms that could be studied in spaca.

Ask by Stuart Ellis. in the United States
Feb 03,2025

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NASA studied changes in one twin on Earth and the other in space to distinguish genetic and environmental factors.

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The correct answer is: **By analyzing changes in one twin on Earth and the other in space.** **Explanation:** NASA conducted the **Twins Study**, which involved identical twin brothers Mark and Scott Kelly. While Scott spent nearly a year aboard the International Space Station, Mark remained on Earth. This unique setup allowed scientists to closely monitor and compare the physiological and genetic changes in Scott due to spaceflight with Mark's condition on Earth. Since both twins share the same genetic makeup, any differences observed could be attributed primarily to the environmental factors of living in space. This approach effectively distinguished between genetic and environmental influences on health and bodily changes. **Answer:** By analyzing changes in one twin on Earth and the other in space.

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NASA leveraged the unique environment of space to conduct groundbreaking research that could tease apart the genetic factors from environmental influences. By analyzing the effects on identical twins, such as Scott and Mark Kelly, who were subjects in a remarkable study where one twin spent an entire year in space while the other remained on Earth, researchers gathered invaluable data on how space travel affects human physiology and genetics, shining a light on the interplay between genetics and environment. This innovative approach not only advanced our understanding of human biology but also produced vital insights for future long-duration space missions, like those to Mars. By determining how factors like microgravity and cosmic radiation impact health, scientists can devise countermeasures to keep astronauts safe and sound during their interplanetary adventures. The study ultimately bolsters our knowledge of space travel and its implications for both astronauts and future generations in understanding human adaptation.

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