Admin What phase do chromosomes elongate?
Mitosis consists of five morphologically distinct phases: prophase, prometaphase, metaphase, anaphase, and telophase. Each phase involves characteristic steps in the process of chromosome alignment and separation.
What pulls chromosomes towards the poles during mitosis?
The segregation of the replicated chromosomes is brought about by a complex cytoskeletal machine with many moving parts—the mitotic spindle. It is constructed from microtubules and their associated proteins, which both pull the daughter chromosomes toward the poles of the spindle and move the poles apart.
Does the cell elongate during anaphase?
2. During anaphase, the nonkinetochore microtubules lengthen and move fast past each other,and the kinetochore microtubules shorten.
How is the cell elongated during this phase of mitosis?
The cell becomes visibly elongated as the non-kinetochore microtubules slide against each other at the metaphase plate where they overlap. During telophase, all of the events that set up the duplicated chromosomes for mitosis during the first three phases are reversed.
What happens in the stages of mitosis?
During mitosis, when the nucleus divides, the two chromatids that make up each chromosome separate from each other and move to opposite poles of the cell. Mitosis occurs in four phases: prophase, metaphase, anaphase, and telophase.
What are the stages of mitosis in order?
These phases are prophase, prometaphase, metaphase, anaphase, and telophase. Cytokinesis is the final physical cell division that follows telophase, and is therefore sometimes considered a sixth phase of mitosis.
What are the stage of mitosis?
Today, mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
Which stage of mitosis is the shortest?
anaphase
In anaphase, the shortest stage of mitosis, the sister chromatids break apart, and the chromosomes begin moving to opposite ends of the cell. By the end of anaphase, the 2 halves of the cell have an equivalent collection of chromosomes.