Question

4 multiple choice 1 point when do homologous chromosomes pair up? prophase i metaphase ii anaphase i telophase ii

Explanation:

During Prophase I of meiosis, homologous chromosomes pair up in a process called synapsis. This pairing is crucial for crossing - over (exchange of genetic material between non - sister chromatids of homologous chromosomes). In Metaphase II, chromosomes align at the equatorial plate, but there is no pairing of homologous chromosomes (as they have already separated in Meiosis I). In Anaphase I, homologous chromosomes separate. In Telophase II, the process of cytokinesis (division of the cytoplasm) occurs to form haploid daughter cells, and there is no homologous chromosome pairing. So, the correct stage when homologous chromosomes pair up is Prophase I.

Answer:

Prophase I