Question

How did the crickets lose their ability to chirp?

Answer 1

Answer:

By a mutation that altered the shape of their wings, making them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.

Explanation:

Answer 2

Answer:

The change seems to have been caused by a mutation that altered the shape of their wings.

Explanation:

Makes them incapable of producing the chirping noise. The feat was achieved over less than 20 generations, a mere evolutionary blink of an eye, and, with the crickets living just a few weeks, a very rapid process.