How does a distribution curve of body lengths for a population of fish change after a predator preys on both extremes of body length (short and long)? (1 point)

Question

Responses

The curve separates with a dip in the middle.
The curve separates with a dip in the middle.

The curve shifts to the right.
The curve shifts to the right.

The curve becomes narrower and taller.
The curve becomes narrower and taller.

The curve shifts to the left.

Answer 1

The most appropriate response is:

The curve becomes narrower and taller.

When a predator preys on both extremes of body length (short and long fish), it typically results in a selection for medium-sized fish. Over time, this can lead to a decrease in variation and a concentration of body lengths around the average size, making the distribution curve narrower and taller.