23. Speciation

Which of the following factors is necessary for allopatric speciation to occur?

Which type of reproductive isolation most likely played a key role in the speciation of Galápagos finches?

Which of the following is an example of a postzygotic reproductive barrier?

Which of the following is an example of a prezygotic barrier?

According to the punctuated equilibrium model of evolution, __________.

What is the first thing that must happen in order for speciation to occur?

Which of the following is an example of geographic isolation in speciation?

Which of these is an example of behavioral isolation in speciation?

Behavioral isolation is an example of what type of barrier in the process of speciation?

When does behavioral isolation occur in the process of speciation?

Which of the following is NOT a common mechanism by which species can become reproductively isolated during the process of speciation?

Which of the following is a characteristic of reproductive isolation in the process of speciation?

Which of the following best describes reproductive isolating mechanisms in the context of speciation?

Which of the following correctly identifies the two main phases of speciation?

Imagine that part of a population of South American finches is blown by a storm onto an island far offshore and manages to survive and reproduce there for a period of 10,000 years. After that period, a climate change results in lower sea levels and the reconnection of the island with the mainland. Members of the formerly isolated island finch population can now interact freely with members of the original mainland population. Which of the following observations would, by itself, lead you to conclude unequivocally that the island finch population had evolved into a distinct species, according to the biological species concept?