Question

What is true about the telophase stage of mitosis?
A) Chromosomes lose their identity as discrete elements.
B) Chromosomes cluster at opposite spindle poles
C) Nuclear envelope,nucleolus,Golgi complex and ER reform
D) All of these

Answer 1

Hint:Telophase is the fifth and final step of mitosis, a mechanism that divides duplicate genetic material from the nucleus of the parent cell into two identical daughter cells. Telophase starts when the replicated, paired chromosomes are divided and pushed to opposite sides, or poles, of the cell.

Complete answer:
A nuclear membrane forms around each set of chromosomes during the telophase to separate the nuclear DNA from the cytoplasm. Chromosomes begin to uncoil, making them more diffuse and less compact. Along with the telophase, the cell undergoes a process called cytokinesis that divides the cytoplasm of the parent cell into two daughter cells.
The telophase starts as the anaphase ends. During anaphase, the chromosomes or chromatids on the metaphase plate are isolated and drawn to opposite poles. When chromosomes enter the pole for which they are intended, the telophase will begin.
In order to allow the new cells to begin generating the necessary proteins and to protect the DNA, the nucleus must be reformed in each cell. Cellular signals are provided during the telophase that tell certain spindle microtubules to disassociate from each other.
 Dimers break up, and the whole system falls into pieces. Other microtubules that will operate during cytokinesis remain intact.
The correct Answer is option(D) All of these.

Note:Each duplicated chromosome is equally divided during mitosis. Thus, two similar nuclei are formed during the telophase. These cells can act in the same way, and can be used to create whole organisms from a single zygote, or to replace damaged cells. Meiosis, on the other hand, produces cells that differ from the genetics they bear.