NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL DIVISION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Phase where the chromosomes unwind back into chromatin?
A
Metaphase
B
Telophase
C
Anaphase
D
Interphase
Explanation: 

Detailed explanation-1: -During telophase, chromosomes arrive at opposite poles and unwind (uncoil) into thin strands of DNA, the spindle fibers disappear, and the nuclear membrane reappears.

Detailed explanation-2: -During telophase both sets of chromatids are surround by new nuclear membranes and chromosomes decondense into chromatin. Cytokinesis (the dividing of the cytoplasm into two cells) follows telophase.

Detailed explanation-3: -Telophase: The chromosomes gather at the poles of the cell, and the cell divides via cytokinesis forming 2 daughter cells. The nuclear envelope reappears, the spindle apparatus disappears and the chromosomes de-condense back into chromatin.

Detailed explanation-4: -Telophase is the fifth and final phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. Telophase begins once the replicated, paired chromosomes have been separated and pulled to opposite sides, or poles, of the cell.

Detailed explanation-5: -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.

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