SAT Subject Biology Practice Question 28: Answer and Explanation
2. In meiosis, crossing over takes longer than any other process. Which stage of meiosis is most likely the longest?
A. Prophase I
B. Metaphase I
C. Anaphase I
D. Prophase II
E. Metaphase II
Correct Answer: A
Crossing over takes place in prophase I of meiosis. Homologous chromosomes must be joined by exchanged DNA sequences before they can align at the metaphase plate.