The difference between microevolution and macroevolution is that
A)macroevolution examines changes in frequency of alleles in a population, whereas microevolution focuses on speciation.
B)microevolution focuses on changes in the gene pools of populations, whereas macroevolution focuses on changes that give rise to new species and groups of species.
C)microevolution is applied to small organisms that undergo only asexual reproduction, whereas macroevolution applies to larger, multicellular organisms that undergo sexual reproduction.
D)microevolution refers to changes that occur in organisms over millions of years, whereas macroevolution refers to physical changes that occur to Earth's surface over the same time period.

Question

Quizplus · Accepted Answer

Microevolution refers to changes in the gene pools and allele frequencies within a population, while macroevolution deals with larger-scale changes, such as speciation and the emergence of new groups of species. In other words, microevolutionary changes accumulate over short periods of time and can be observed within a single population, whereas macroevolutionary changes occur over much longer periods of time and involve the divergence of lineages that can result in the emergence of new species, genera, families, and even higher taxa.

The Difference Between Microevolution and Macroevolution Is That