Question

during which phase of mitosis do the nuclear membrane, nucleolus, and nucleus dissolve?
metaphase
prophase
anaphase
telophase

Explanation:

• Metaphase: Chromosomes align at the cell's equator. Nuclear membrane, nucleolus, and nucleus are already dissolved.
• Prophase: Chromatin condenses into chromosomes. Nuclear membrane, nucleolus, and nucleus dissolve.
• Anaphase: Sister chromatids separate and move to opposite poles. Nuclear membrane, nucleolus, and nucleus are already dissolved.
• Telophase: Nuclear membrane, nucleolus, and nucleus re - form.

Answer:

prophase