full transcript
"From the Ted Talk by Prosanta Chakrabarty: Clues to prehistoric times, found in blind cavefish"

Unscramble the Blue Letters

Its closest relatives are cavefishes in Kentucky, in the Mammoth Cave system. And they start to diverge when the Ohio River split them a few million years ago. And in that time they developed these subtle differences in the gteienc architecture behind their bnsdniles. There's this gene called ropsoidhn that's super-critical for sight. We have it, and these species have it too, except one secipes has lost all function in that gene, and the other one maintains it. So this sets up this beautiful natural eexnpmriet where we can look at the gnees behind our vision, and at the very roots of how we can see.

Open Cloze

Its closest relatives are cavefishes in Kentucky, in the Mammoth Cave system. And they start to diverge when the Ohio River split them a few million years ago. And in that time they developed these subtle differences in the _______ architecture behind their _________. There's this gene called _________ that's super-critical for sight. We have it, and these species have it too, except one _______ has lost all function in that gene, and the other one maintains it. So this sets up this beautiful natural __________ where we can look at the _____ behind our vision, and at the very roots of how we can see.

Solution

  1. experiment
  2. species
  3. genes
  4. rhodopsin
  5. genetic
  6. blindness

Original Text

Its closest relatives are cavefishes in Kentucky, in the Mammoth Cave system. And they start to diverge when the Ohio River split them a few million years ago. And in that time they developed these subtle differences in the genetic architecture behind their blindness. There's this gene called rhodopsin that's super-critical for sight. We have it, and these species have it too, except one species has lost all function in that gene, and the other one maintains it. So this sets up this beautiful natural experiment where we can look at the genes behind our vision, and at the very roots of how we can see.

Important Words

  1. architecture
  2. beautiful
  3. blindness
  4. called
  5. cave
  6. cavefishes
  7. closest
  8. developed
  9. differences
  10. diverge
  11. experiment
  12. function
  13. gene
  14. genes
  15. genetic
  16. kentucky
  17. lost
  18. maintains
  19. mammoth
  20. million
  21. natural
  22. ohio
  23. relatives
  24. rhodopsin
  25. river
  26. roots
  27. sets
  28. sight
  29. species
  30. split
  31. start
  32. subtle
  33. system
  34. time
  35. vision
  36. years