Meiosis 1

Cards (5)

  • Interphase
    .DNA replication (Info doubles still 46 chromosomes but now 92 chromatids not 46)
    .Growth of cell
    . Normal cell function
  • Prophase 1
    .Nuclear envelope breaks down
    .Chromosomes condense
    .Chromosomes join with their homologous pairs (Chromosomes that have the same size, same types of genes and at the same location)
    .Crossing over, alleles switch between chromosomes- GENETIC VARIATION
  • Metaphase 1
    .Chromosome pairs line up down the equator (middle) of the cell
    .Centrioles at opposite poles of the cell form spindle fibres which attach to the chromosome's centromeres, I dependant assortment random lining up GENETIC VARIATION
  • Anaphase 1
    .The spindle fibres pull the chromosomes to opposite ends of the cell
  • Telophase + Cytokenesis 1
    .2 new nuclear envelopes formed
    .The cell splits and two new cell membranes are formed to form two new cells