Which piece of evidence did Darwin observe during his 5-year journey aboard the HMS Beagle?
A)A South American species of finch is most likely the ancestor of the Galápagos Island finches.
B)Species do not change over time.
C)The environment can bring about inherited change in an individual.
D)All species share the same basic genetic and molecular makeup.
E)The earth is approximately 4.6 billion years old.

Question

Quizplus · Accepted Answer

During his journey, Darwin observed that the finches on the Galápagos Islands had varying beak shapes and sizes, which he hypothesized were adaptations to the different available food sources on each island. Later, he found a South American species of finch with similar variations in beak shape and size, which led him to believe that the Galápagos finches had descended from this species and undergone adaptive radiation.

Which Piece of Evidence Did Darwin Observe During His 5-Year