What environmental factor would have caused the changes as resulted in the chart above?
Question 7 options:

The climate changed, and the color of the trees favored the Green (DD) genotype over the others.

The climate changed, and the color of the trees favored the light-green (Dd) genotype over the others.

A new predator was introduced that could only see the Yellow (dd) genotype.

There was no environmental change, the heterozygous genotype is always more dominant within a population.