Reproduction

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Author:
Valoren
ID:
144641
Filename:
Reproduction
Updated:
2012-03-29 15:12:30
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Reproduction
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Reproduction
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  1. Interphase
    chromosome replication
  2. Mitosis results into...
    two identical cells
  3. Order of mitosis phases
    • 1. Interphase
    • 2. Prophase
    • 3. Metaphase
    • 4. Anaphase
    • 5. Telophase
    • 6. Cytokinesis
  4. Prophase
    • 1. Chromosomes condense
    • 2. Centriole pairs seperate and move to opposite ends
    • 3. Spindle fibers form
    • 4. Nuclear Membrane disolves
  5. Metaphase
    chromosome align in the center of the cell
  6. Anaphase
    Sister chromatids seperate and move to opposite ends
  7. Telophase
    • 1. Spindle fibers disappear
    • 2. Nuclear membrane forms around newly formed chromosomes
  8. Cytokinesis
    Cleavage furrow forms and the cytoplasm divides into two daughter cells
  9. Plants do not have...
    centrioles and spindle fibers
  10. does clevage happen in plants?
    no
  11. cell plate takes place in what kind of cells
    plant cells
  12. Crossing over occurs in
    meiosis
  13. How many chromosomes
    46
  14. Meiosis results into
    4 haploid cells
  15. Meiosis phase
    • 1. Interphase I
    • 2. Prephase I
    • 3. Metaphase I
    • 4. Anaphase I
    • 5. Telophase I
  16. Interphase I
    chromosomes replicate
  17. Prophase I
    • 1. Chromosomes condense
    • 2. Nuclear membrane disappear
    • 3. Synapsis between homologous chromosomes takes place
    • 4. Crossing over of homologous chromosomes
  18. Metaphase I
    homologous pairs align adn attach to spindle fibers by its kinetochore
  19. Anaphase I
    Disjunction-homologous chromosomes seperate and move to opposite ends
  20. Telophase I
    nuclear membrane forms around each nucleous
  21. Telophase I
    nuclear membrane forms around each nucleus
  22. Second Meiotic Division
    same as mitos but there is no chromosomal replication and 4 haploid sex cells are formed
  23. Gamete
    sex cells
  24. Zygote
    union of sex cells, fertilized egg
  25. Testes
    produce sperm
  26. Ovaries
    produce oocytes (eggs)
  27. Hermaphrodites
    species that have both male and female gonads
  28. Gonads
    organs that have testes and ovaries
  29. Spermatogenesis
    sperm production and occurs in the seminiferous tubules
  30. Oogenesis
    the production of female gametes occurs in ovaries
  31. Polar Body
    cell that contains little more than the nucleus
  32. External Fertilization
    occurs in vertebrates that produce in water
  33. Internal Fertilization
    practiced by terrestrial vertebrates and provide direct route for sperm to reach egg
  34. Pathway of sperm (sevenup)
    • Seminiferus Tubules
    • Epididymis
    • Vas Defens
    • Ejaculation Duct
    • Nothing
    • Urethra
    • Penis
  35. Testerone
    regulates secondary male characteristics including facial and pubic hair and voice change
  36. Follicle
    make the ovaries-follicles are a multilayered sac of cells taht contain, nourish and protect an immature ovum
  37. Cervix
    narrow end of the uterus
  38. Ovaries
    synthesize and secrete the female sex horomones including estrogen and progesterone
  39. LH and FSH
    regulate secretion of estrogen and progesterone
  40. Estrogen
    are steroid horomones that stimulate the development of the female reproductive tract and secondary sexual characteristics
  41. Endometrium
    uterine wall that is thickened by estrogen
  42. Progesterone
    is a steroid horomone that stimulates the development and maintainance of endmetrial walls
  43. Menstrual Cycle phases
    • 1. Follicular phase
    • 2. Ovulation
    • 3. Leteal Phase
    • 4. Menstruation
  44. Follicular Phase
    FSH promotes the development of the follicle which grows and begins secreting estrogen
  45. Ovulation
    A mature ovarian follicle bursts and releases an ovum caused by LH and by peak in estrogen levels
  46. Luteal Phase
    LH induces the rupture follice to develop inti the corpus luteum
  47. Menstruation
    if the ovum is not fertilized the corpous luteum atrophis

    if fertilization occurs the developing placenta produces hCG
  48. Asexual Reproduction
    used by plants to produce offspring without fertilization
  49. Fission
    it occurs in one celled organisms such as bacteria-it is a simple form of sexual reproduction where DNA replicates and a new plasma membrane and cell wall will grow inward and then divide into two equal sized cells
  50. Budding
    is the replication of the nucleus fallowed by unequal cytokinesis
  51. Regeneration
    growth of lost or injured body part and occurs by mitosis
  52. Parthenogenesis
    the development of an unfertilized egg into an adult organism

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