Factors Affecting Biological Diversity Answers

Fill in the blank below with the word that best completes the sentence.Natural selection leads to , a process of change in a population over time.

Complete the sentence below by selecting the correct words from the drop-down menus.Factors that affect natural selection include ✔ variationsimilarity, underpopulation✔ overpopulation, and ✔ adaptationextinction.

Favors traits at the two extremes: X directional selection✔ disruptive selectionstabilizing selection

No increase in diversity: ✔ directional selectiondisruptive selectionX stabilizing selection

One extreme trait is favored: ✔ directional selectionX disruptive selectionstabilizing selection

Diversity decreases: directional selectionX disruptive selection✔ stabilizing selection

Diversity increases: X directional selection✔ disruptive selectionstabilizing selection

What are the two phases of speciation?

A population of wildflowers is separated by an eight-lane superhighway. Pollen is often carried by the wind across the highway and can pollinate the flowers on the other side of the highway. Can speciation occur in this situation?

A population of deer is separated by an emerging volcano. The two populations come back into contact 200 years later, but are incapable of breeding. Which of the following best describes the process that occurred?

Which piece of evidence would most go against the scientist’s argument and suggest that the butterflies are actually different species?

Which graph best represents disruptive selection?

Which graph best represents directional selection?

Results in the evolution of the species: ✔ directional selectionX disruptive selectionstabilizing selection

Which type of natural selection is at work here?

Which type of natural selection is at work here?

What term describes an evolutionary process through which a new species emerges?

Results in new species: directional selection✔ disruptive selectionstabilizing selection