SAT Subject Biology Practice Question 4: Answer and Explanation

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Question: 4

4. A cell contains multiple nuclei with identical genetic information. This cell most likely formed by going through

A. multiple rounds of mitosis, but no cytokinesis
B. multiple rounds of the M phase, but no rounds of the S phase
C. multiple rounds of cytokinesis, but no rounds of mitosis
D. multiple rounds of the cell cycle, but no rounds of mitosis
E. multiple rounds of the S phase, but no other phases of the cell cycle

Correct Answer: A


A single cell with multiple nuclei must have undergone multiple rounds of mitosis, which is the replication of the nucleus. It did not, however, undergo cytokinesis, which is the division of a eukaryotic cell to form two daughter cells.

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