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How many cells do you end up with in Mitosis?
Thursday, March 5, Day 1 Agenda Note book 1. Please have these Items on your desk. Science Starters Sheet Science Starter: How many cells do you end up with in Mitosis? How many cells do you end up with in Meiosis? Which of the two processes ends up with cells that have a complete set of chromosomes? 4. Which of the two processes ends up with cells that have a half set of chromosomes?
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T.O.C. Update Page /5/ Meiosis
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MEIOSIS
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Meiosis is the type of: Cell division by which eggs and sperm are produced. One parent cell produces four daughter cells. Daughter cells have half the number of chromosomes found in the original parent cell
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During meiosis, DNA replicates once, but the nucleus divides twice.
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Four stages can be described for each division of the nucleus.
Meiosis Four stages can be described for each division of the nucleus.
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First division of meiosis
Meiosis I First division of meiosis
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First Division of Meiosis
Same as the mitosis. Cell divides into 2 cells with the same genetic information
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Prophase I
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Prophase I
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Metaphase I
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Telophase I
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Second Division of Meiosis
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Second Division of Meiosis
Prophase 2: DNA does not replicate. Metaphase 2: Chromosomes line up at the center of the cell Anaphase 2: Centromeres divide and sister chromatids move separately to each pole. Telophase 2: Cell division is complete. Four haploid daughter cells are formed.
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Definition Haploid- Having a single set of unpaired chromosomes, as in a germ cell, such as an egg or sperm.
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Prophase II
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Metaphase II
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Telophase II
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Meiosis
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Meiosis Animation
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Differences in Mitosis & Meiosis
Asexual Cell divides once Two daughter cells Genetic information is identical Creates regular cells Meiosis Sexual Cell divides twice Four haploid daughter cells Genetic information is different Only creates sex cells E.g. sperm and eggs
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Comparison Animations
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