Reference no: EM132598037

Scientists have long believed that the 14 species of finches on the Galapagos Islands evolved from a single species of finch that migrated to the islands one to five million years ago (Lack, 1940). Recent DNA analyses support the conclusion that all of the Galapagos finches evolved from the warbler finch (Grant, Grant & Petren, 2001; Petren, Grant & Grant, 1999). Different species live on different islands. For example, the medium ground finch and the cactus finch live on one island. The large cactus finch occupies another island. One of the major changes in the finches is in their beak sizes and shapes.

What is the best way to describe the evolutionary changes that occur in a finch population over time?

Group of answer choices

• Successful behaviors learned by finches are passed on to offspring.
• The frequency of finches having different traits within a population change.
• Mutations occur to meet the needs of the finches as the environment changes.
• The traits of each individual finch gradually change over time.