During which stage of the mitotic cell cycle do the chromosomes decondense back to strands of chromatin and each set of separated genetic material becomes enclosed in a nuclear envelope to form two daughter nuclei:

during the telophase stage

Explanation:

The chromosomes decondense back to strands of chromatin and each set of separated genetic material becomes enclosed in a nuclear envelope to form two daughter nuclei at the telophase stage of the cell cycle.

Mitotic cell cycle is divide into the interphase during which the cell prepares for active division and the m phase during which the cell enters active division.

The active division (mitosis) has 4 main stages:

prophase metaphase anaphase telophase

At the prophase, the cell membrane disolves and the chromossomal materials condense to become visible as chromosomes. Spindle formation becomes initiated at the same time.

At the metaphase, the chromosome aligns at the center of the cell to form the metaphase plate with each chromosome being engaged at the centromere by the spindle from the opposite poles of the cell.

Chromosome separates into sister chromatids at anaphase and commence their migration to opposite ends of the cell as a result of shortening of the spingle fiber at the anaphase.

The telophase is characterised by completed migration and decondensation of chromosomes and the reappearance of the nuclear envelope around each group of separated genetic materials to form two daughter nuclei.

The cytoplasm eventually divides to form two daughter cells during cytokinesis.