The graph on the left shows the heights of a population of penguins. the graph on the left shows heights of the population five years later.

what happened to the population of penguins?

disruptive selection

There are three types of selection:

Stabilizing selectionDirectional selectionDisruptive selection

1. Stabilizing selection

Selects for average individuals Decreases variation/diversity ⇒ the population has more of the average trait and less of the extreme traits

2. Directional selection

Selects for one of the extreme variations of a traitDecreases variation/diversity

3. Disruptive selection

Selects for both extremes of a trait's variationSelects against average phenotypesCan lead to speciation (formation of a new species)

See below attachment for additional help.

This is giving me a headache i have asked others and they don’t know it either