Q.Describe the sequence of events that occur during anaphase and telophase of mitosis.

[!TLDR]

Anaphase: centromere splits, chromatids move to poles. Telophase: chromosomes decondense, nuclear envelopes re-form.

[!ANSWER]

Anaphase -- centromere splits; sister chromatids separate and move to opposite poles. Telophase -- chromosomes decondense; nuclear envelope re-forms around each set; nucleolus reappears; cytokinesis typically begins.

Anaphase begins the instant the centromere joining each pair of sister chromatids splits, so that the two chromatids of every chromosome become independent daughter chromosomes; spindle fibres attached to each kinetochore then shorten, drawing the two new, identical sets of chromosomes toward the two opposite poles of the cell, which typically elongates slightly along the axis of division. Telophase follows once the two sets of chromosomes have reached their respective poles: the chromosomes begin to decondense back into diffuse chromatin, a new nuclear envelope re-forms around each group re-establishing two separate nuclei, the nucleolus reappears within each, and cytokinesis -- division of the cytoplasm, via a cleavage furrow in an animal cell or a growing cell plate in a plant cell -- typically begins, completing the formation of two daughter cells.

[!ANSWER]

Anaphase -- centromere splits; sister chromatids separate and move to opposite poles. Telophase -- chromosomes decondense; nuclear envelope re-forms around each set; nucleolus reappears; cytokinesis typically begins.

Separate the two stages clearly: anaphase is about SEPARATION and MOVEMENT, telophase is about REVERSING prophase's changes (decondensing, re-forming the envelope).

Merging anaphase and telophase into one description, or placing nuclear envelope re-formation at anaphase instead of telophase.