Question

A cell is destined to complete cell cycle
A.When it enters post-mitotic phase
B.When it crosses restriction point
C.Only when it crosses G0​ checkpoint
D.When all checkpoints are successfully crossed

Answer 1

Hint: There are certain checkpoints in a cell cycle at which it is chosen whether the cell should push ahead with the division or not.

Complete answer:
The cell cycle is finished when all the checkpoints are effectively crossed.These checkpoints are as per the following:
Restriction point or G 1checkpoint-At this checkpoint, it is chosen whether cell conditions are positive or not. Here, the cell size and proteins are checked. After this checkpoint is cleared, the cell advances to the S-stage.
G 2 checkpoint-At this point, it is evaluated whether the DNA replication has happened precisely. Any blunder in replication would capture the cell division progress at this checkpoint.
M checkpoint-This happens at the metaphase, and in here it is checked whether all the chromosomes are appropriately adjusted to the spindle fibres or not on the grounds that directly after the metaphase, chromosomes must be dispersed to the daughter cells and on the off chance that they are not adjusted appropriately, the defective distribution may happen. Any issue at this stage would capture the cell cycle.

Hence the correct answer is option(D)

Note: Somatic cells are diploid cells, partition through mitosis and moves the hereditary material inside a similar creature body additionally named as horizontal gene transfer though, gametes are haploid cells, produced by meiotic division of germ cells and are basic for sexual generation