Which of the following statements about species, as defined by the biological species concept, is (are) correct?
I. Biological species are defined by reproductive isolation.
II. Biological species are the models used for grouping extinct forms of life.
III. The biological species is the largest unit of population in which successful interbreeding is possible.

Question

Quizplus · Accepted Answer

The biological species concept defines species based on reproductive isolation, so statement I is correct. While the biological species concept is not used to categorize extinct organisms, statement II is incorrect. Statement III is correct and defines the biological species as the largest group that can interbreed and produce viable offspring. Therefore, only option B, which includes statements I and III, is correct.

Which of the Following Statements About Species, as Defined by the Biological