When the Daphne Major finches reach a point where the costs of having a beak larger than average size outweigh the benefits, beak size will begin to stay the same, and the population will achieve a(n) ________ state.
A) direction
B) trend
C) equilibrium
D) drift

Question

Quizplus · Accepted Answer

Equilibrium is the state where the population has reached a balance between competing pressures, in this case, the advantages and disadvantages of having a beak larger than average size. Once the costs outweigh the benefits, there will be no selective pressure for larger beaks, and the population will stabilize at a certain beak size, creating an equilibrium state.

When the Daphne Major Finches Reach a Point Where the Costs