NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
During telophase,
A
nuclear membranes begin to form
B
chromosomes line up in the middle
C
nuclear envelope breaks
D
chromosomes pull apart
E
spindle fibers break down
Explanation: 

Detailed explanation-1: -Telophase: spindle fibers break down, nuclear membrane forms, and chromosomes begin to uncoil and form chromatin.

Detailed explanation-2: -During telophase, what remains of the network of spindle fibers is dismantled. Also, around each complete set of chromosomes, a nuclear envelope begins to form and the daughter chromosomes begin to decondense.

Detailed explanation-3: -During telophase, the chromosomes begin to decondense, the spindle breaks down, and the nuclear membranes and nucleoli re-form. The cytoplasm of the mother cell divides to form two daughter cells, each containing the same number and kind of chromosomes as the mother cell.

Detailed explanation-4: -During telophase, the chromosomes begin to uncoil and form chromatin. This prepares the genetic material for directing the metabolic activities of the new cells. The spindle also breaks down, and new nuclear membranes (nuclear envelope) form.

Detailed explanation-5: -Telophase. The final stage of mitosis, and a reversal of many of the processes observed during prophase. The nuclear membrane reforms around the chromosomes grouped at either pole of the cell, the chromosomes uncoil and become diffuse, and the spindle fibres disappear.

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