Cell cycle Flashcards
What are all the phases of the Cell cycle
G1, S,G2 and mitotic (M) phase
What is the function of the G1 phase of the cell cycle?
the cell grows in preparation for DNA replication
What is the function of the S phase of the cell cycle?
Replication of DNA (S stands for synthesis)
What is the function of the G2 phase of the cell cycle?
prevents cells with damaged DNA, lasting from the G1 and S phases or generated in G2, from undergoing mitosis
What are the 5 stages of mitosis?
Prophase Metaphase Anaphase Telophase Cytokinesis
Describe prophase
Chromosomes condense
Nuclear membrane disappears
Spindle fibres form from the centriole
Describe Metaphase
Chromosomes aligned at the equator of the cell
Attached by fibre to each centriole
Maximum condensation of chromosome
Describe Anaphase
Sister chromatids separate at centromere
They separate longitudinally
Chromatids move to opposite ends of cell
Describe Metaphase
New nuclear membranes form
Each cell contains 46 chromosomes (diploid)
Describe Cytokinesis
Cytoplasm separates