Question

Which statement is the best example of trait variation? (1 point)
Researchers discover that gender in two new species of turtles is influenced by temperature.
Researchers discover different mouth sizes in two new species of freshwater bass.
Researchers discover differences in leaf thickness between populations of a new oak species.
Researchers discover that high winter yield is possible in a new species of rice.

Answer 1

The best example of trait variation among the provided options is:

**Researchers discover different mouth sizes in two new species of freshwater bass.**

This statement illustrates variation in a specific trait (mouth size) between two distinct species, which is a clear example of trait variation.