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Understanding Meiosis: A Comprehensive Review

Dive into the process of meiosis with this detailed review covering key concepts such as chromosome behavior, cell division, genetic recombination through crossing-over, and the formation of haploid gametes. Learn about the significance of haploid and diploid cells and how meiosis ensures the appropriate chromosome number in reproductive cells. Get ready for your minitest tomorrow!

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Understanding Meiosis: A Comprehensive Review

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  1. Meiosis Review Answers MINITEST tomorrow

  2. Question # 1 • Match the following. • F Individual chromosomes line up at the equator • A Homologous chromosomes pair up; crossing-over occurs • G Centromere splits; sister chromatids move to opposite poles • E Chromosomes condense; spindle fibers form • D Cell divides forming 2 daughter cells • B Homologous chromosome pairs line up at the equator • C One chromosome from each pair moves to each pole • H Cell divides forming 4 haploid daughter cells

  3. Question #2 • What (specifically) is being made during meiosis? • Gametes • Sperm • Eggs

  4. Question #3 • How many times does the cell divide during meiosis? • Two times

  5. Question #4 • If an organism has 16 chromosomes in one of its body cells, how many chromosomes would its sex cells have? • 8

  6. Question #5 • What is crossing over? Draw an example to show crossing-over. • When pieces of chromosomes cross over each other, resulting in a new combination of genes

  7. Question #6 • When does crossing-over occur during Meiosis? • Prophase I

  8. Question #7 • Gametes are haploid/diploid.

  9. Question #8 • What does haploid mean? • One of each chromosome

  10. Question #9 • What does diploid mean? • Two of each chromosome

  11. Question #10 • What is a tetrad and when does it form? • A tetrad is four sister chromatids side-by-side • It forms during prophase I

  12. Question #11 • How many sperm are produced per parent cell during meiosis? • Four

  13. Question #12 • How many eggs are produced per parent cell during meiosis? • One • Why is this different from the number of sperm produced? • The cells divide unevenly

  14. Question #13 • Why does the chromosome number need to be cut in half during meiosis? • So that when the sperm and egg combine, the zygote will have the correct number of chromosomes

  15. Question # 14

  16. Question #15 • Know the Comparing Mitosis and Meiosis worksheet information.

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