Telophase I (Meiosis) describes...

• A. DNA replication occurs
• B. Two nuclei form and cytokinesis occurs
• C. Crossing over occurs
• D. Spindle fibres form

Answer: (B)

Telophase I describes the end of the first meiotic division where the chromosomes have arrived at the poles and the cell begins to split. Two separate nuclei form as the nuclear envelopes reassemble around each haploid set, and cytokinesis often occurs to divide the cytoplasm, producing two distinct haploid daughter cells. This is the moment when the cell transitions from a single diploid cell to two cells that contain half the original chromosome number, each with duplicated chromosomes still composed of sister chromatids.

DNA replication happens earlier, during interphase before meiosis begins, not in Telophase I. Crossing over occurs during prophase I, not Telophase I. Spindle fibers form during prophase I as the spindle apparatus assembles, not during Telophase I.