NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the Cell Cycle, what is anaphase?
A
the fourth phase of the Cell Cycle in which the cell growth is interrupted
B
the fourth phase of mitosis in which the separated chromosomes are then pulled by the spindle to opposite poles of the cell
C
the phase where a cell is coated with a membrane that keeps it from breaking apart
D
the phase in which the cell is attached to other cells to promote growth
Explanation: 

Detailed explanation-1: -The separated chromosomes are then pulled by the spindle to opposite poles of the cell. Anaphase ensures that each daughter cell receives an identical set of chromosomes, and it is followed by the fifth and final phase of mitosis, known as telophase .

Detailed explanation-2: -In order to accomplish this goal, mitosis occurs in four discrete, consistently consecutive phases: 1) prophase, 2) metaphase, 3) anaphase, and 4) telophase.

Detailed explanation-3: -Anaphase I begins when homologous chromosomes separate. The nuclear envelope reforms and nucleoli reappear. The chromosomes coil up, the nuclear membrane begins to disintegrate, and the centrosomes begin moving apart. Spindle fibers form and sister chromatids align to the equator of the cell.

Detailed explanation-4: -Anaphase: During anaphase, the centromere splits, allowing the sister chromatids to separate. The kinetochore spindle fibers shorten, allowing for 46 of the newly-freed chromatids to be dragged to one end of the cell and the remaining 46 chromatids to be dragged to the opposite end of the cell.

Detailed explanation-5: -Anaphase is the stage of mitosis after the metaphase when replicated chromosomes are split and the daughter chromatids are moved to the cell’s opposite poles. The separation of two chromatids of each chromosome at early anaphase is initiated by the force of repulsion between the divided kinetochores.

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