Question

Genetic evidence supports which of the following explanations for the presence of 13

different finch species on the Galápagos Islands?
A. Each of the 13 species was founded by the independent migration of a different species from the mainland to
the islands.
B. Many years ago, more than 13 different species of birds migrated to the islands. The current 13 finch species
are the only species that survived.
C. It's not clear based on the DNA evidence whether the 13 species arose from a single migration of one species
or multiple migrations of several species from the mainland to the islands.
D. Many years ago, a small population of a single finch species migrated to the islands and evolved into the
current 13 species.

Answer 1

The correct option is D) Many years ago, a small population of a single finch species migrated to the islands and evolved into the current 13 species.

Step-by-step explanation:

The evolution of thirteen species in their attempt to adapt to different environments over many generations. According to the theory of natural selections, organisms evolve with the passage of time and those organisms which are better adapted to live in an environment survive and pass on their characteristics to their offsprings.

Genetic diversity allows offsprings to be produced which are not exactly identical to the parent.