2. Explain the difference between microevolution and macroevolution. Which of the two would apply to the occurrence of antibiotic resistance in a bacterial population exposed to common antibiotics? 3. How does the bottleneck effect influence the genetic variability of a species? 4. Explain the meaning of a reproductive barrier. 5. What is a hybrid zone? 6. Natural selection is only one of many mechanisms that modern biologists consider forces that shape evolution. Another one is called genetic drift. How would natural selection and genetic drift differ from each other? 7. Darwin proposed that species evolve in a gradual pattern through the accumulation of many small changes. However, another modern model is called punctuated equilibrium (pattern). What is the main difference between these two models?
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Micro-evolution refers to small-scale changes in a population's gene pool over a few generations, while macro-evolution refers to large-scale changes that occur over long periods of time, leading to the formation of new species. Antibiotic resistance in a Show more…
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A) What is microevolution and how would you contrast microevolution with macroevolution? B) What does it mean to say, "individuals are selected, but populations evolve"? C) What is the smallest unit of evolution? What is a population? What is the modern synthesis? How has it contributed to our understanding of evolution? D) Genetic variation makes evolution possible. Why is genetic variation so important to evolution? E) Explain how mutations are the ultimate source of new alleles. How does sexual recombination produce variation?
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