Meiosis

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Meiosis

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Identify the stage
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What stage?
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Review

• homologs matching chromosomes
• gene
• alleles

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Key Vocabulary

• somatic cell ?
• gamete -?example
• gonad -

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Key Vocab (cont)

• diploid (2n)
• haploid (n)
• Which is diploid, a somatic cell or a gamete?

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Purpose of Meiosis

• ? to produce gametes! (Thats easy!) OR
• ? to reduce chromosomes per cell by
  ½ WHY?? (See board)

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What is a tetrad?
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What funky thing do tetrads do?
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Stages of Meiosis
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Interphase
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Prophase I

• Is this cell human?
• How many chromosomes are pictured?
• How many pairs of chromosomes
• How many tetrads?
• What is 2n for this organism?

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Metaphase I

• Note tetrads (pairs) line up on equator instead
  of duplicated chromosomes

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Anaphase I
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Telophase I

• How many cells?
• How many chromosomes per cell?
• How many pairs of chromosomes in each cell?

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Prophase Metaphase II
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Anaphase Telophase II

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Compare Contrast Mitosis Meiosis (BE SPECIFIC)

• Contrast

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Compare Contrast Mitosis Meiosis (BE SPECIFIC)

• Compare

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Compare Contrast meiosis in men with meiosis
with women