EVERYDAY SCIENCE

Detailed explanation-1: -These phases occur in strict sequential order, and cytokinesis-the process of dividing the cell contents to make two new cells-starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.

Detailed explanation-2: -Prometaphase is the second phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. During prometaphase, the physical barrier that encloses the nucleus, called the nuclear envelope, breaks down.

Detailed explanation-3: -The second phase of mitosis is metaphase, in which the chromosomes move into the equatorial plane of the spindle. As the third phase-anaphase-begins, the chromatids separate and move to opposite ends of the cell. Once the chromatids separate, they are called chromosomes.

Detailed explanation-4: -In prometaphase II, microtubules attach to the kinetochores of sister chromatids, and the sister chromatids are arranged at the midpoint of the cells in metaphase II. In anaphase II, the sister chromatids are separated.

Detailed explanation-5: -When prophase is complete, the cell enters prometaphase-the second stage of mitosis. During prometaphase, phosphorylation of nuclear lamins by M-CDK causes the nuclear membrane to break down into numerous small vesicles. As a result, the spindle microtubules now have direct access to the genetic material of the cell.