Which statement about speciation is not true?
A) It always takes thousands of years.
B) Reproductive isolation may develop slowly between diverging lineages.
C) Among animals, it usually requires a physical barrier.
D) Among plants, it often happens as a result of polyploidy.
E) It has produced the millions of species living today.

Question

Quizplus · Accepted Answer

Speciation can occur over varying time scales, and may not always take thousands of years. Some instances of speciation, such as polyploidy in plants, can occur relatively quickly.

Which Statement About Speciation Is Not True