Mitosis, Meiosis, Cell Cycle, Cancer – Flashcards
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What is the benefit of meiosis?
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increases genetic diversity
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List the phases of MITOSIS in order:
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Prophase, Metaphase, Anaphase, Telophase
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Before growing through mitosis, a cheetah's stomach cell has 20 chromosomes, how many chromosomes would you expect to find in the daughter cells produced after mitosis?
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20, chromosomes number stays constant in mitosis
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What happens during Interphase?
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DNA replicates
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What happens during Metaphase?
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Chromosomes line up down the middle
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What happens during Prophase?
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Nucleus breaks apart, chromosomes wind up
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What happens during Anaphase?
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Chromosomes are split apart
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What happens during Telophase/ Cytokinesis?
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Nucleus reforms, cell begins to pull apart
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In which phase of the cell cycle are chromosomes first visible?
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Prophase
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Why does DNA replication ensures that each new cells gets an identical copy of DNA
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The old strands are templates for the new strands
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During DNA replication Adenine (A) always bonds to _______.
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Thymine (T)
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Crossing over of chromosomes during meiosis increases a species'________________.
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genetic diversity
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In what part of the cell cycle does DNA replication occur in?
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S phase
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In what part of the cell cycle does mitosis occur?
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M phase
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Why do cells need to go through the cell cycle?
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Cells are too big, and DNA can not meet the demands of a large cell
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Why do tumors form?
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The cell cycle is unregulated
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Cancer cells ____________
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grow uncontrollably/ unregulated
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Interphase
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DNA is copied
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Prophase
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Both chromosomes are visible
