Question

what is the primary difference between microevolution and macroevolution?
a. microevolution involves changes within a species, while macroevolution involves the formation of new species
b. microevolution occurs over millions of years, while macroevolution happens in a matter of weeks
c. microevolution is driven by human intervention, while macroevolution is entirely natural
d. microevolution only affects physical traits, while macroevolution affects behavior

which mechanism of evolution involves the transfer of genetic material between populations, usually through migration?
a. natural selection
b. non - random mating
c. founder effect
d. gene flow

macroevolution involves:
a. small - scale changes within a species
b. changes in allele frequencies within a population
c. interbreeding of distinct species
d. formation of entirely new species over extended periods

Explanation:

Microevolution refers to small - scale changes in allele frequencies within a population or species over short periods. Macroevolution involves large - scale changes such as the formation of new species over long periods. Gene flow is the transfer of genetic material between populations, often due to migration.

For the first question, microevolution is about changes within a species and macroevolution is about new species formation. For the second, gene flow is the mechanism of genetic material transfer between populations via migration. For the third, macroevolution is about the formation of new species over time.

Answer:

1. a. Microevolution involves changes within a species, while macroevolution involves the formation of new species
2. d. Gene flow
3. d. Formation of entirely new species over extended periods