Question

prophase
metaphase
anaphase
telophase
dna condenses into chromosomes
chromosomes move from the center along the spindle fibers
centrosomes move to opposite sides of the cell
nuclear envelope breaks up
chromosomes reach the opposite ends of the cell
sister chromatids separate into chromosomes
chromosomes relax and nuclear envelopes form
mitotic spindle fibers form and attach to centromeres
chromosomes align in the center of the cell

Explanation:

• Prophase: Marks the start of mitosis. Chromatin condenses into visible chromosomes. Centrosomes (with centrioles in animal cells) migrate to opposite poles, spindle fibers form and attach to centromeres, and the nuclear envelope disassembles to allow spindle access to chromosomes.
• Metaphase: Chromosomes, now attached to spindle fibers, align at the cell’s equatorial plane (metaphase plate) for equal distribution.
• Anaphase: Sister chromatids (now called chromosomes) separate at the centromere and are pulled by spindle fibers toward opposite poles. This ensures each new cell gets an identical set of chromosomes.
• Telophase: Chromosomes reach the poles and decondense (relax). Nuclear envelopes reform around each set of chromosomes, and the spindle apparatus disassembles, preparing the cell for cytokinesis (division of the cytoplasm).

Answer:

Prophase:

• DNA condenses into chromosomes
• Centrosomes move to opposite sides of the cell
• Mitotic spindle fibers form and attach to centromeres
• Nuclear envelope breaks up

Metaphase:

• Chromosomes align in the center of the cell

Anaphase:

• Sister chromatids separate into chromosomes
• Chromosomes move from the center along the spindle fibers
• Chromosomes reach the opposite ends of the cell

Telophase:

• Chromosomes relax and nuclear envelopes form