Meiosis II
Interphase II: Also referred to as Interkinesis, Interphase II, unlike during Meiosis I and Mitosis, facilitates only growth and replication of organelles. No DNA replication takes place during this phase.
Prophase II: As during Mitosis, during this phase, the nucleus and nucleolus disappear. The sister chromatids separate; however, they do not participate in crossing over during this phase. A spindle apparatus forms and the chromosomes progress toward metaphase II plate, Metaphase II: The sister chromatids will align on the metaphase plate. Unlike Metaphase I, independent assortment is not a factor during this phase. The chromosomes are positioned on the metaphase plate in a mitosis-like fashion. Anaphase II: Similar to Mitosis, the centromeres will separate during this phase. The sister chromatids of each pair move toward opposite poles (now as individual chromosomes) Telophase II: Nuclei will form around the separated chromosomes at the poles and then cytokenesis occurs . Cytokinesis II: A cleavage furrow forms to separate into two. The resulting daughter cells are haploid (1N). A total of 4 daughter cells. |
Meiosis II Concepts
|