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Epigenetic Changes in Space Article

Grade Levels
10th - 12th, Homeschool
Formats Included
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2 pages
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A groundbreaking NASA Twins Study was just released, showing gene expression differences in identical twins Scott and Mark Kelly during Scott's 1 year on the International Space Station. This free assignment provides background on epigenetics as well as a summary of the results from the Twins Study and how it relates to gene expression. Applications for future space travel and use of CRISPR-Cas9 technology are included.

The following topics are addressed: epigenetics, DNA, genes, DNA methylation, gene expression, identical twins

*Links for additional background information on epigenetics, CRISPR-Cas9, and the Twins Study is included for teacher or student use. If you'd like to provide more information on Epigenetics, please consider my Epigenetics Lesson and Web-quest.

Perfect for a sub plan or homework assignment.


  • 1 reading on the NASA Twins Study and how it relates to epigenetics
  • 3 comprehension questions
  • Answer key

For more lessons on Genetics and DNA, please see my other resources:

Total Pages
2 pages
Answer Key
Teaching Duration
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to see state-specific standards (only available in the US).
Ask questions to clarify relationships about the role of DNA and chromosomes in coding the instructions for characteristic traits passed from parents to offspring. Assessment does not include the phases of meiosis or the biochemical mechanism of specific steps in the process.


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