Why does the DNA unwind back into chromatin in cytokinesis?

Do chromosomes unwind in cytokinesis?

During cytokinesis the chromosomes unwind and become a pile of very long, thin, thread-like DNA and the cell goes back to looking “normal” until mitosis begins again. … Replicated chromosomes become visible (coil up). Each replicated chro- mosome is made of two identical chromatids.

Is DNA replicated during cytokinesis?

Cytokinesis is the process where one cell splits off from its sister cell. … After acquiring sufficient size and ATP, the cells then undergo DNA Synthesis (replication of the original DNA molecules, making identical copies, one “new molecule” eventually destined for each new cell) which occurs during the S phase.

What happens during cytokinesis?

Cytokinesis is the physical process that finally splits the parent cell into two identical daughter cells. During cytokinesis, the cell membrane pinches in at the cell equator, forming a cleft called the cleavage furrow.

What occurs during cytokinesis?

Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells. It occurs concurrently with two types of nuclear division called mitosis and meiosis, which occur in animal cells.

How do chromosomes split apart during anaphase?

During anaphase, the microtubules attached to the kinetochores contract, which pulls the sister chromatids apart and toward opposite poles of the cell (Figure 3c). At this point, each chromatid is considered a separate chromosome.

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What structure is responsible for moving the chromosomes during mitosis?

The spindle is a structure made of microtubules, strong fibers that are part of the cell’s “skeleton.” Its job is to organize the chromosomes and move them around during mitosis. The spindle grows between the centrosomes as they move apart.

Why does DNA replicate itself?

DNA must replicate (copy) itself so that each resulting cell after mitosis and cell division has the same DNA as the parent cell. … Using DNA as a template means that on the new strand, the bases are placed in the correct order because of the base pairing rules.

What happens during interphase answers?

During interphase, the cell grows and makes a copy of its DNA. During the mitotic (M) phase, the cell separates its DNA into two sets and divides its cytoplasm, forming two new cells.