Caribbean Lizards Suggest That Evolution More Predictable Than Originally Thought

by Douglas Main

If you could rewind time and watch evolution take place all over again, would it happen the same way as it did before?

This question has long puzzled thinkers like legendary evolutionary scientist Stephen Jay Gould, who proposed that evolution was “utterly unpredictable and quite unrepeatable.” But a new study of Caribbean lizards published today (July 18) in the journal Science suggests that, at least in some circumstances, evolution may be more predictable than previously thought.

It is, as you might imagine, difficult to test what would happen if you could rewind and replay the “tape of life,” said Luke Mahler, a study author and researcher at the University of California, Davis. In lieu of time travel, Mahler and his co-authors turned to the Caribbean islands.

All of the lizard diversity on four major islands — Cuba, Jamaica, Hispaniola (home to Haiti and the Dominican Republic) and Puerto Rico — arose from a single species as individuals rafted to these spots on logs and other debris over the course of millions of years, Mahler told LiveScience. In other words, it’s the perfect natural laboratory to see what might have happened if evolution repeated itself four separate times…

(read more: Live Science)    (photos: D. Luke Mahler / Science)

  1. vasiliskos reblogged this from reptilefacts
  2. liveblogging-depression reblogged this from rhamphotheca
  3. vanesa reblogged this from systema-naturae
  4. plightofthelonelycitydweller reblogged this from rhamphotheca and added:
    Caribbean Lizards Suggest That Evolution More Predictable Than Originally Thought by Douglas Main If you could rewind...
  5. reptilesgalore reblogged this from reptilefacts
  6. amandamals reblogged this from reptilefacts
  7. sundarsunya reblogged this from reptilefacts
  8. reptilefacts reblogged this from rhamphotheca and added:
    Caribbean Lizards Suggest That Evolution More Predictable Than Originally Thought by Douglas Main
  9. archaean reblogged this from molecularlifesciences
  10. fibonacci-flowers reblogged this from molecularlifesciences
  11. shark-butt-soup reblogged this from molecularlifesciences
  12. molecularlifesciences reblogged this from rhamphotheca
  13. bewilderbeastillustrations reblogged this from rhamphotheca
  14. animaltalkline reblogged this from rhamphotheca
  15. howdoyouturnthison reblogged this from pcatan
  16. tigersandtiger reblogged this from rhamphotheca
  17. strigops reblogged this from rhamphotheca
  18. aardonyx reblogged this from rhamphotheca
  19. lampshaming reblogged this from revereche