During Meiotic Prophase in a Eukaryotic Cell, Spo11 Initiates Recombination

question 6

Multiple Choice

During meiotic prophase in a eukaryotic cell, Spo11 initiates recombination by causing a double-strand break in DNA between Gene A and Gene B on one sister chromatid.Which of these events will occur prior to formation of a Holliday junction?

• A)A heteroduplex forms due to pairing of Gene A and Gene B.
• B)Resolvase cuts all four chromatids.
• C)Spo11 causes a double-strand break in a nonsister chromatid.
• D)Strand invasion causes one strand of the uncut chromatid to form a D loop.
• E)Branch migration lengthens the heteroduplex region to include Gene A and Gene B.

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