2025, Question 6 · Short answer · 4 points · about 10 minutes
Fruit fly meiosis and chromosome alignment
Analyze data on a protein involved in chromosome alignment and predict effects on gamete chromosome numbers.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2025 exam. It starts on page 10 of the PDF.
Open Question 6 (PDF, page 10)
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 11) What the exam readers saw (Chief Reader report)
Question, scoring guidelines and Chief Reader report: College Board. The title, summary are ours.