Question

The museum’s Darwin finch exhibit shows how different beak shapes evolved on different Galápagos islands. Each island’s finches have beaks adapted to their specific food sources. Order the following steps in the adaptive radiation process that led to different finch beak shapes.
Question 8 options:

Common ancestor finches arrived on the Galápagos islands

Different beak morphologies evolved on each island

Natural selection favored beak shapes suited to each island's food

Finches spread to different islands with different food sources

Answer 1

1. Common ancestor finches arrived on the Galápagos islands
2. Finches spread to different islands with different food sources
3. Natural selection favored beak shapes suited to each island's food
4. Different beak morphologies evolved on each island

(Arrival → dispersal to varied environments → selection for local food-use → divergence of beak forms.)