Exam 14: Species and Speciation

The beginning of this chapter presents research conducted on mosquito populations. The researchers compared Culex pipiens and Culex pipiens molestus to confirm if they were separate species. How did they confirm they were separate species by applying the biological species concepts?

Changes in ploidy in plants are typically tolerated and have minor effects on survival or fertility, and it can often lead to rapid speciation. How are these changes preserved in the next generation?

Describe the primary difference between allopatric, parapatric, and sympatric speciation.

Which of the following statements about changes in ploidy is true?

Which of the following is NOT a prezygotic isolating mechanism?

Briefly describe reproductive isolation via changes in chromosome number, chromosomal rearrangement, and Dobzhansky-Muller incompatibility.

Explain the difference(s) between prezygotic and postzygotic isolating mechanisms, and provide an example of each.

Which statement best describes the potential effect of genetic drift in the peripheral isolate model of allopatric speciation?