AP BIOLOGY

CELL DIVISION

THE 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: -In telophase when the two nuclei start forming, the spindle fibres disappear and also the nuclear membrane and the nucleolus reappear. So, the correct option is “Telophase".

Detailed explanation-2: -During this stage, the microtubules, or spindle fibers, pull the homologous chromosomes apart and move them to opposite ends of the cell. Telophase I is next. Here the spindle fibers are broken up, new nuclear membranes form, the chromosomes uncoil, and the cell divides into two daughter cells.

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: -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.

Detailed explanation-5: -In telophase, the spindle fibers disperse as the chromosomes are cordoned off into distinct new nuclei. After cytokinesis, which is the division of the cell’s cytoplasm, two genetically identical daughter cells are produced each containing one centrosome with one centriole pair.

There is 1 question to complete.