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  1. Meiosis Review

  2. ________ are sex cells. • Gametes

  3. Are your sex cells diploid or haploid? • Haploid

  4. Are daughter cells produced at the end of meiosis II considered diploid or haploid? • Haploid

  5. What is the genetic relationship of daughter cells to each other in meiosis? • Genetically DIFFERENT!

  6. How many daughter cells are produced at the end of meiosis? • 4

  7. _______ is the female gamete. • Egg cell

  8. ___________ are the paired chromosomes that have genes for the same traits arranged in the same order. • Homologous chromosomes

  9. _________ is the process of joining gametes. • Fertilization

  10. What are the male sex chromosomes? • XY

  11. How many chromosomes do you have in your skin cells? • 46

  12. ____________ is a cell containing 2 sets of chromosomes. • Diploid

  13. Is the number of chromosomes related to the complexity of an organism? WHY? • NO! • A dog has 78 chromosomes and is less complex than humans

  14. _______ is a two stage type of cell division that creates gametes. • Meiosis

  15. At the end of meiosis II, how many (human) chromosomes does each daughter cell have? • 23

  16. How many cell divisions occur in MITOSIS? • 1

  17. Are the daughter cells produced at the end of MITOSIS considered haploid or diploid? • Diploid

  18. What is the diploid number in humans? • 46

  19. __________ are all cells other than egg or sperm cells. • Somatic cells

  20. How many chromosomes do you have in your egg or sperm cells? • 23

  21. What is the genetic relationship of daughter cells to each other in MITOSIS? • Genetically the SAME!

  22. ________ is the cell that is created when a sperm fertilizes an egg. • zygote

  23. What are the female sex chromosomes? • XX

  24. What is the genetic relationship of daughter cells to parent cell in meiosis? • Genetically DIFFERENT!

  25. _________ is a cell with only ONE set of chromosomes. • Haploid

  26. Why is meiosis significant? (2 reasons) • 1. creates haploid gametes • 2. provides genetic variation

  27. How many chromosomes do you get from your mom? • 23

  28. During what stage of meiosis does crossing over occur? • Prophase I

  29. How many cell divisions occur in meiosis? • 2

  30. __________ occurs when nonsister chromatids of homologous chromosome exchange genetic information. • Crossing over

  31. ______ is the male gamete. • sperm

  32. What is the genetic relationship of daughter cells to parent cell in MITOSIS? • Genetically the SAME!

  33. At the end of meiosis I, how many (human) chromosomes does each daughter cell have? • 46

  34. EXPLAIN how meiosis provides genetic variation? (2 ways) • 1. Crossing over – random swapping of DNA • 2. Independent assortment of the homologous chromosomes – it is random to which side of the cell the chromosomes move to (223)

  35. How many daughter cells are produced from MITOSIS? • 2

  36. What is the haploid number in humans? • 23

  37. Are your somatic cells diploid or haploid? • Diploid