During anaphase, anaphase occurs. This is when the lined up chromosomes begin to pull apart to other sides of the large, undivided cell. This pulling is done by microtubules. Once the chromosomes are on opposite sides of each other, this marks the end of anaphase and start of telophase.
During mitotic anaphase, sister chromatids are pulled apart and move toward opposite poles of the cell. However, DNA replication does not occur during this phase; it takes place during the S phase of the cell cycle prior to mitosis. Additionally, the nuclear envelope remains intact during anaphase, as it is broken down during prophase.
Nondisjunction can occur during Anaphase in mitosis, or either Anaphase I or II in meiosis. This is the step of each aformentioned process when the chromosomes are separated into different regions within the dividing cell, so they can be segregated further by cytokenesis.
prophase
condensation
Nondisjunction occurs during anaphase, usually when referring to meiosis, when a tetrad fails to separate.
No, it occurs after telophase, which is after anaphase.
anaphase
Anaphase I, and then again in Anaphase II--two seperations occur in meiosis.
Mitosis and cytokinesis occur during the M phase (mitotic phase) of the cell cycle. This phase is characterized by cell division, where the cell replicates its DNA and divides into two daughter cells.
Nondisjunction can occur during Anaphase in mitosis, or either Anaphase I or II in meiosis. This is the step of each aformentioned process when the chromosomes are separated into different regions within the dividing cell, so they can be segregated further by cytokenesis.
Nondisjunction can occur during the separation of chromosomes in meiosis, specifically during the anaphase stage. This can lead to an abnormal number of chromosomes in the resulting gametes.
anaphase
prophase
Metaphase occurs during meiosis and mitosis. These processes are how most cells reproduce to make two new cells. Some use binary fission.
condensation
In general, nondisjunction can occur in any form of cell division that involves ordered distribution of chromosomal material.There are three forms of nondisjunction: failure of a pair of homologous chromosomes to separate in meiosis I, failure of sister chromatids to separate during meiosis II, and failure of sister chromatids to separate during metaphase going into anaphase of mitosis.mitosis
Yes, in fact there are no phases in which Dna does not occur.