Cell Division (AQA A-Level Biology): Flashcards
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10 cards from this deck
What does mitosis produce?
What does mitosis produce?
Two genetically identical daughter cells
When does DNA replication occur in the cell cycle?
When does DNA replication occur in the cell cycle?
S phase of interphase
What are the two identical copies of a chromosome joined at the centromere called?
What are the two identical copies of a chromosome joined at the centromere called?
Chromatids (or sister chromatids)
List the four stages of mitosis in order
List the four stages of mitosis in order
Prophase, metaphase, anaphase, telophase
What happens to chromosomes during prophase?
What happens to chromosomes during prophase?
They condense and become visible
What structure disappears in metaphase?
What structure disappears in metaphase?
Nuclear envelope
What happens to sister chromatids in anaphase?
What happens to sister chromatids in anaphase?
They separate and move to opposite poles
What reforms around chromosomes in telophase?
What reforms around chromosomes in telophase?
Nuclear envelopes
What is cytokinesis?
What is cytokinesis?
Division of the cell into two daughter cells
What can uncontrolled mitosis lead to?
What can uncontrolled mitosis lead to?
Cancer cells and tumours