Multiple Choice
Down syndrome is characterized by cells having three copies of chromosome 21. As a cell in an individual with Down syndrome prepares to enter mitosis, how many chromatids would be present?
A cell with a single large nucleus.
A cell with high concentrations of actin and myosin.
A cell with two abnormally small nuclei.
A cell with two completely identical nuclei.
A cell with two non-identical nuclei with half the amount of DNA.
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