What are the checkpoints in the cell cycle?
Checkpoints in the cell cycle (G1, G2, and M checkpoints) ensure that the cell is ready to proceed to the next phase, preventing errors and ensuring proper cell division.
What is crossing over and during which phase of meiosis does it occur?
Crossing over is the exchange of genetic material between homologous chromosomes during Prophase I of meiosis, leading to genetic variation.
How does cytokinesis differ in plant and animal cells?
In animal cells, cytokinesis occurs through cleavage, while in plant cells, a cell plate forms to divide the cytoplasm.
What is the role of centromeres during cell division?
Centromeres hold sister chromatids together and attach to spindle fibers, ensuring proper chromosome separation.
What are the different stages of mitosis?
The stages of mitosis are Prophase, Metaphase, Anaphase, Telophase, followed by Cytokinesis.
Why is meiosis important for sexual reproduction?
Meiosis produces haploid gametes, ensuring genetic diversity and the correct chromosome number in offspring.
What occurs during the S phase of Interphase?
DNA replication occurs, doubling the DNA content while maintaining the same chromosome number.
How does mitosis differ from meiosis?
Mitosis results in two identical diploid cells, while meiosis produces four genetically diverse haploid cells.
What are the main phases of the cell cycle?
The main phases are Interphase (G1, S, G2) and M Phase (Mitosis).
What is the significance of the cell cycle?
The cell cycle is crucial for growth, repair, and reproduction. It ensures genetic continuity and the proper function of cells.
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