Salamanders normally go through a juvenile stage in which they have external gills.Most salamanders lose these gills when they develop into adults, but axolotl salamanders retain gills into adulthood by suppressing metamorphosis.This is an example of
A)gene duplication.
B)co-opting a gene for a new function.
C)homeosis.
D)heterochrony.

Question

Quizplus · Accepted Answer

Heterochrony refers to changes in the timing of developmental events, leading to changes in size and shape. In axolotls, the retention of juvenile features like gills into adulthood is an example of heterochrony.

Salamanders Normally Go Through a Juvenile Stage in Which They