In animal cells the nucleus can divide by mitosis or meiosis. A person with Patau syndrome had three copies of chromosome 13 in each body cell. This occurred due to an error in meiosis in the formation of his father's sperm cells. The diagram shows what happened to chromosome 13 during the formation of the father's sperm cells. The zygote would develop into a morula and then into a blastocyst. Which row in the table is correct? (1)

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