Chpt4 reproduction

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Chpt4 reproduction

  1. 1. Organisms have to reproduce (makebabies) so their species can survive.
  2. 2. If a species stopped reproducing , it would eventually go extinct.
  3. 3. Definition:There are of reproduction: reproduction reproduction.
  4. 4. Same Samegenes genes
  5. 5. asexual reproduction: only one parent;offspring genetically identical to parent Examples of asexual reproduction
  6. 6. asexual reproduction: only one parent;offspring genetically identical to parent Example of asexual reproduction
  7. 7. The of asexual reproduction is that it is . Example of asexual reproduction
  8. 8. The of asexual reproduction ithat there is in offspring are .
  9. 9. The following are two MOREexamples of asexual reproduction:
  10. 10. asexual reproduction: only one parent;offspring genetically identical to parent Example of asexual reproduction
  11. 11. Cloning is a type of asexual reproduction. Cloning produces a new individual genetically identical to the parent
  12. 12. In the 1990’s a sheep named Dolly was successfully cloned
  13. 13. sexual reproduction: A. the a B. the C. The two D. The over a 9 month period (in humans) E. The .
  14. 14. Now answer #1- 20
  15. 15. :
  16. 16.
  17. 17. Mitosis is why damaged body parts heal!
  18. 18. Now answer # 21- 31
  19. 19. .
  20. 20. Now answer # 32- 39.
  21. 21. Word!We’re some cool cats!
  22. 22. Now answer # 40-43.
  23. 23. Fertilization:
  24. 24. (sperm or eggs) 46 is thechromosome number for humans
  25. 25. : all
  26. 26. fertilization (the uniting of the gametes) creates a unique offspring.
  27. 27. The offspring gets half of its genes fromeach parent but it is a unique individual.
  28. 28. Advantages and disadvantages of meiosis (sexual reproduction)
  29. 29. Advantages:• Creates a great deal of variations in species.• The variations help a species to survive.• The variations can lead to natural selection and evolution.
  30. 30. ZygoteFormation, Growthand Differentiation:
  31. 31. The following is how multi-cellular organisms reproduce:
  32. 32. sperm and eggcombine, results in a zygote (a fertilized egg).
  33. 33. (a fertilized egg) has 46 chromosomes (for humans). Azygote
  34. 34. The zygote undergoes acalled . The cells divide and divideand divide and divide….without growing in size.
  35. 35. from steps A to E, the cells are . None of the cells have aspecialized function. At steps F and G begins.
  36. 36. whe n the cells become . The cells changebecoming the body parts of the embryo.
  37. 37. after the cells havebecoming the body parts of the embryo. The embryo grows until the baby is born.
  38. 38. This shows . Byday 56, the embryo is fully-formed, it just has to grow to full term.
  39. 39. are the (1st three months)of pregnancy ..
  40. 40. A development question like this may be on the regents
  41. 41. You must know the steps of development for the regents!
  42. 42. You must know the steps ofdevelopment for the regents!
  43. 43. Now answer #44-61
  44. 44. HumanReproduction andDevelopment
  45. 45. You must know the humanreproductive systems and what each part does for the regents….
  46. 46. For the male reproductive system: you onlyneed to know that organ “X” is . The testes .
  47. 47. The female reproductive system ismore complicated than the male’s
  48. 48. You have know a lot more….
  49. 49. A: (ova) .
  50. 50. B: (oviduct)
  51. 51. C: .
  52. 52. A different picture of female reproductive system. Fallopian tube uterus
  53. 53. A Woman’s 28 day menstrual cycle is regulatedby hormones
  54. 54. You must know that the (growing baby).
  55. 55. A: is the . The .
  56. 56. are from the baby .
  57. 57. 1: birth canal
  58. 58. 2: umbilical cord
  59. 59. 3: placenta
  60. 60. 4: fallopian tube (oviduct)
  61. 61. 5: fluid sac
  62. 62. Summary:You must know the steps of reproduction for the regents.
  63. 63. What process is steps 1 ?
  64. 64. What process is steps 1 ?Meiosis (aka Oogenesis)
  65. 65. What process is step 2?
  66. 66. What process is step 2?Meiosis (spermatogenesis)_
  67. 67. What process is step 3?
  68. 68. What process is step 3? fertilization
  69. 69. What process is step 4?
  70. 70. What process is step 4? differentiation
  71. 71. What process is step 5?
  72. 72. What process is step 5? growth
  73. 73. Now answer # 87- 97

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