[Campbell Biology P.556] How do microevolution and macroevolution, as described in the text,... | Practice Question
How do microevolution and macroevolution, as described in the text, relate to each other?
A: Microevolution describes changes in individual organisms, while macroevolution describes changes in populations.
B: Microevolution focuses on allele frequency changes within a population, whereas macroevolution refers to broad evolutionary patterns above the species level.
C: Macroevolution leads to speciation, while microevolution happens after speciation.
D: They are completely separate processes with no conceptual bridge between them.
Explanation
The text defines microevolution as 'changes over time in allele frequencies in a population' and macroevolution as 'the broad pattern of evolution above the species level.' It then states that 'Speciation forms a conceptual bridge between' these two, indicating they are linked rather than separate.