Describe one mechanism that could have introduced the ‘a’ allele into the population. (1 point)
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
If you meant “Wwxxyyzz” as a specific code for a real released exam, please provide more context—I can then direct you to the official College Board resources where that exam might be found (e.g., AP Classroom or past secure exams). Describe one mechanism that could have introduced the
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 you meant “Wwxxyyzz” as a
The organism is exposed to an antibiotic that blocks the electron transport chain. Predict the relative growth rate under aerobic conditions (compared to the table) and explain how the cell would compensate. (2 points) Question 2 (20 min) A population of Wwxxyyzz is grown in a chemostat for 200 generations. Initially, all individuals have the same allele for a membrane transport protein. After 200 generations, two alleles (A and a) are present at frequencies: A = 0.3, a = 0.7.