Interphase: composed of G1, S, and G2 phase; occurs before mitosis
• G1: Cell metabolically active; duplicates organelles and cytosolic components; centrosome replication begins.
• S: DNA replication
• G2: Cell growth continues; enzymes and other proteins are synthesized; centrosome replication completed.
A group of cells is assayed for DNA content immediately before beginning mitosis and it found to have an average of 16 picograms of DNA per nucleus. How many picograms would be in a cell nucleus following completion of mitosis and cytokinesis?
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