Meiosis

HideShow resource information
  • Created by: vezting
  • Created on: 18-10-15 16:43
View mindmap
  • Prophase 1: chromatin condenses, chromosomes shorten thicken.
    • homologous pairs form bivalents
    • crossing over, non-sister chromatids wrap around at the chaismata
    • nuclear envelope breaks down, spindle forms
    • Meiosis
      • Metaphase 1: bivalents to equator.
        • spindle by centromere
        • bivalents randomly assorted each memeber of homologous pair faces opposite poles
      • anophase 1: homolougous chromosomes pulled to opposite poles
        • chiasmata seperate, crossed over sections remain in new place
      • telophase 1: 2 new nuclear envelopes reform
        • cell divieds by cytokenisis
        • brief interphase- does not happen with plants
      • prophase 2: nuclear envelopes breaks down, nucleolous disapears
        • spindles form
          • chromosomes condense
      • anaphase 2: centromeres divide, chromatids pulled to opposite poles
      • telophase 2:nuclear envelope reforms
        • 4 haploid cells produced (daughter)
  • metaphase 2:  centromeres attach to spindle at equator
    • chromatids and chromosomes randomly assorted
    • Meiosis
      • Metaphase 1: bivalents to equator.
        • spindle by centromere
        • bivalents randomly assorted each memeber of homologous pair faces opposite poles
      • anophase 1: homolougous chromosomes pulled to opposite poles
        • chiasmata seperate, crossed over sections remain in new place
      • telophase 1: 2 new nuclear envelopes reform
        • cell divieds by cytokenisis
        • brief interphase- does not happen with plants
      • prophase 2: nuclear envelopes breaks down, nucleolous disapears
        • spindles form
          • chromosomes condense
      • anaphase 2: centromeres divide, chromatids pulled to opposite poles
      • telophase 2:nuclear envelope reforms
        • 4 haploid cells produced (daughter)

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all DNA, genetics and evolution resources »