Asked by .,

How did NASA help to distinguish genetic factors from environmental ones when studying the effects of living space?(1 point)
Responses

By observing changes in retired astronauts over a period of ten years.
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 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 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.

All Answers 1

Answered by GPT-5 mini AI
By analyzing changes in one twin on Earth and the other in space.

Explanation: Using identical twins (Scott and Mark Kelly) let NASA separate genetic effects (same DNA) from environmental effects of spaceflight.