Cyclins regulates the timing of the cell cycle in eukaryotic cells.
Further Explanation:
The cell cycle refers to an ordered flow of events which includes cell growth as well as cellular division. This cycle produces 2 new daughter cells. The cycle starts with interphase in this the cell mature and replicates its own DNA or deoxyribonucleic acid. The interphase begins with:
- G1 phase: This is the primary growth phase provide nutrient to the cell.
- S phase or synthesis of DNA: During this phase, the replication of DNA takes place. The centrosome is divide and forms mitotic spindle during the mitosis phase.
- G2 or second gap: during this phase, the cell mainly replenishes its energy stores as well as synthesizes the proteins which are required for the chromosome manipulation.
The second stage of a cell cycle is the mitosis or M phase. Chromosomal abnormalities can occur during metaphase of meiosis. Mitotic phase refers to a multiphase process in this the chromosomes are aligned, segregated, and moved into the two new daughter cells which are identical to each other.
The cell cycle mainly is positively regulated by cyclin or cyclin dependent kinase. Cyclin are of different types such cyclin D, E, A, B. The timing of the cell cycle is related to the cyclin and CDK levels. The cyclin levels depends on the phase in which the cell is present. One type of cyclin degrades as the cell moves to the successive phases.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Cell Cycle
Keywords:
Mitosis, meiosis, cell division, anaphase, telophase, cytokinesis, prophase, metaphase, segregation, chromosome.
