SAT Subject Biology Practice Question 28: Answer and Explanation

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Question: 28

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.

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