Unhelpful adaptations can speed up evolution
Guppies moved to predator-free zones show changes in gene activity
![guppies!](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/09/090215_ti_guppy_main.jpg?fit=860%2C460&ssl=1)
GUPPY GAINS Trinidadian guppies from the Guanapo River basin (shown) make unhelpful changes in gene activity when they first enter a new environment. Those missteps speed up evolution, a new study suggests.
Pierson Hill