Mitosis (Leaving Cert Biology): Flashcards
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What is mitosis?
What is mitosis?
Nuclear division forming 2 nuclei, each with same chromosome number as parent
Number of nuclei formed in mitosis
Number of nuclei formed in mitosis
2
% of cell cycle that is mitosis
% of cell cycle that is mitosis
10%
4 stages of mitosis in order
4 stages of mitosis in order
Prophase, Metaphase, Anaphase, Telophase
Prophase: chromosome appearance
Prophase: chromosome appearance
Short, thick, double-stranded structures
What holds the two chromosome strands together?
What holds the two chromosome strands together?
Centromere
Prophase: nuclear membrane
Prophase: nuclear membrane
Starts to break down
Metaphase: nuclear membrane
Metaphase: nuclear membrane
Completely breaks down
Metaphase: chromosome position
Metaphase: chromosome position
Line up along the equator
Anaphase: spindle fibres
Anaphase: spindle fibres
Contract
Anaphase: centromeres
Anaphase: centromeres
Split
Anaphase: chromosome movement
Anaphase: chromosome movement
Pulled to opposite poles
Telophase: nuclear membrane
Telophase: nuclear membrane
Forms around each group of chromosomes
Telophase: chromosomes become
Telophase: chromosomes become
Chromatin