Question

The chromosomes have condensed and that the centrosomes have started to migrate as the nuclear envelope breaks down. What stage of meiosis is this cell in?

A. Prophase I
B. Metaphase I
C. Anaphase I
D. Telophase I

Answer 1

The stage of meiosis where chromosomes condense, centrosomes migrate, and the nuclear envelope breaks down is Prophase I.

Step-by-step explanation:

If chromosomes have condensed, centrosomes are migrating, and the nuclear envelope is breaking down, the cell is likely in Prophase I of meiosis I. During this stage, the chromosomes condense and become visible, centrioles or centrosomes start moving to opposite poles of the cell and the spindle apparatus begins to form. Unlike mitosis or meiosis II's prophase, in Prophase I, homologous chromosomes pair up, which is unique to this stage. Additionally, crossing-over, the process where homologous chromosomes exchange genetic material, occurs during Prophase I, further indicating this as the correct stage of meiosis.