The correct sequence of cell cycle is (LQ)
The cell cycle, or cell-division cycle (CDC), is the series of events in a eukaryotic cell between one cell division and the next.
Thus, it is the process by which a single-cell fertilized egg develops into a mature organism (cleavage) and the process by which hair, skin, blood cells, and some internal organs are renewed.
A specialized form of cell division is responsible for cellular differentiation during embryogenesis and morphogenesis, as well as for the maintenance of stem cells during adult life.
The cell cycle consists of four distinct phases: G1 phase, S phase, G2 phase (collectively known as interphase) and M phase.
Interphase is a phase of the cell cycle, defined only by the absence of cell division.
During interphase, the cell obtains nutrients, and duplicates its chromosomes.
Most of the cells spend most of their time in interphase. For example, human skin cells, which divide about once a day, spend roughly 22 hours in interphase.
Cells during interphase may or may not be growing. Some cells, such as nerve cells, can stay in interphase for decades. The cell grows and replicates its DNA and centrioles.
There are 3 parts of interphase: G1 (growth 1 in which the cell creates organelles and begins metabolism), S phase (DNA synthesis in which the chromosomes of the cell are copied) and G2 (growth 2 in which the cell grows in preparation for cell division)
M phase is itself composed of two tightly coupled processes: mitosis, in which the cell's chromosomes are divided between the two daughter cells, and cytokinesis, in which the cell's cytoplasm physically divides.
Cells that have temporarily or reversibly stopped dividing are said to have entered a state of quiescence called G0 phase, while cells that have permanently stopped dividing due to age or accumulated DNA damage are said to be senescent.
The molecular events that control the cell cycle are ordered and directional; that is, each process occurs in a sequential fashion and it is impossible to "reverse" the cycle.
There are two key classes of regulatory molecules that determine a cell's progress through the cell cycle: cyclin(s) and cyclin-dependent kinases.