AP BIOLOGY

CELL DIVISION

MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Chromosomes (not replicated) finish moving towards the poles in this phase:
A
Metaphase II
B
Anaphase II
C
Telophase II
D
Prometaphase II
Explanation: 

Detailed explanation-1: -Mitosis ends with telophase, or the stage at which the chromosomes reach the poles. The nuclear membrane then reforms, and the chromosomes begin to decondense into their interphase conformations. Telophase is followed by cytokinesis, or the division of the cytoplasm into two daughter cells.

Detailed explanation-2: -In telophase II, nuclear membranes form around each set of chromosomes, and the chromosomes decondense. Cytokinesis splits the chromosome sets into new cells, forming the final products of meiosis: four haploid cells in which each chromosome has just one chromatid.

Detailed explanation-3: –Humans have 46 chromosomes and there are 23 chromosomes in the telophase-II stage. Note: Telophase-II is the stage at which the group of chromosomes at each pole of the spindle gets enclosed by a nuclear envelope.

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: -Finally in telophase, identical sets of unreplicated chromosomes (single chromatids) are completely separated from each other into the two daughter cells, and the nucleus re-forms around each of the two sets of chromosomes.

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