A student claims the change from A to a frequency of 0.7 is proof of evolution. Is the student correct? Defend your answer using biological definitions. (2 points) 2. 2020 AP Bio Exam Format Summary (for reference) | Feature | Details | |-----------------------|-------------------------------------------------------------------------| | Total time | 45 minutes | | Number of FRQs | 2 | | Question 1 | Longer, data‑based or experiment‑based (25 min) | | Question 2 | Shorter, analysis of a biological model or scenario (20 min) | | Topics highlighted | Natural selection, cellular energetics, information transfer (gene expression), and ecological interactions | | No multiple choice | Yes (due to COVID‑19 shortened exam) | 3. Blank Template for “Wwxxyyzz Ap Bio 2020” Paper You can copy this into a document and fill in your own details.
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) Wwxxyyzz Ap Bio 2020
Describe one mechanism that could have introduced the ‘a’ allele into the population. (1 point) A student claims the change from A to a frequency of 0
Predict how the addition of an uncoupler of oxidative phosphorylation would affect ATP production and oxygen consumption. Explain your reasoning. (2 points) (2 points) 2