The mechanism of macroevolution occurs by
A)multiple acts of speciation on an ancestral organism.
B)continuation of gene flow between populations.
C)weakening of barriers to reproductive isolation.
D)appearing in the fossil record of species with similar morphologies.

Question

Quizplus · Accepted Answer

Macroevolution involves the origin of new taxa through the process of speciation, where an ancestral population splits into two or more new species over time. This can occur through various mechanisms such as geographic isolation, genetic drift, and natural selection. Therefore, choice A is the best option as it refers to the multiple acts of speciation on an ancestral organism, which leads to the emergence of new taxa and the diversification of life on Earth.

The Mechanism of Macroevolution Occurs by