Ancestors of the Galapagos finches had two different types of seeds to eat on some islands.Some seeds were very small,and required small beaks to handle,other seeds were very large and required large strong beaks to crack.This led to ____ among the Galapagos finches.

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The fact that the two types of seeds require two different beak sizes means that natural selection is favoring birds with either small beaks or large, strong beaks. This leads to disruptive selection, as the population evolves to have two distinct beak sizes.

Ancestors of the Galapagos Finches Had Two Different Types of Seeds