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Chpt4 reproduction

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