AP Biology 2020 – Practice Exam Organism code: Wwxxyyzz Question 1 (25 min) [Insert your data table or figure here] (a) [Your question] (b) [Your question] (c) [Your question] (d) [Your question]
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The ‘a’ allele encodes a transporter with a higher affinity for glucose under low‑glucose conditions. Explain how natural selection could have changed allele frequencies in this direction. (2 points) AP Biology 2020 – Practice Exam Organism code:
If the population is moved to a high‑glucose environment, predict what will happen to the frequency of the ‘a’ allele over 50 generations. Justify your prediction. (2 points) (2 points) If the population is moved to
Predict how the addition of an uncoupler of oxidative phosphorylation would affect ATP production and oxygen consumption. Explain your reasoning. (2 points)
| Condition | Growth rate | |--------------------|-------------| | Aerobic, glucose | 1.2 | | Anaerobic, glucose | 0.4 | | Aerobic, no glucose| 0.1 |