Question

In peppered moth populations, light and dark moths are selected for in different environments. Which type of selection is this, and what would a distribution curve for all peppered moths look like?(1 point) Responses stabilizing selection; two peaks at the extremes of the graph with a dip in the middle stabilizing selection; two peaks at the extremes of the graph with a dip in the middle disruptive selection; two peaks at the extremes of the graph with a dip in the middle disruptive selection; two peaks at the extremes of the graph with a dip in the middle disruptive selection; a tall, narrow peak in the center of the graph disruptive selection; a tall, narrow peak in the center of the graph stabilizing selection; a tall, narrow peak in the center of the graph

Answer 1

The type of selection described for the peppered moth populations is disruptive selection. This occurs because the light and dark moths are favored in different environments, leading to selection for the extreme phenotypes.

The distribution curve for all peppered moths under disruptive selection would look like two peaks at the extremes of the graph with a dip in the middle. This reflects the increased frequency of both light and dark moths while the intermediate forms are selected against.

So, the correct response is: disruptive selection; two peaks at the extremes of the graph with a dip in the middle.