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  • Meiosis I - homologus chromosomes pair up and their chromatids wrap around each other and equivalent portions of these chromatids may be exchanged in crossing over. At the end of this stage the homologus pairs will separate with each chromosome from each pair going into each daughter cell. This results in two haploid daughter cells.
  • Meiosis II - where chromatids move apart and the two haploid cells divide again to produce four haploid cells.
  • When the cell is not dividing, it is said to be in interphase. In this phase, the DNA content is doubled and new cell organelles are formed.

Meiosis I

  • Prophase I - chromosomses become condensed and split into two chromatids. Centrioles move to poles of the cel and microtubules begin to form the spindle. Homologus chromasomes associate in pairs (known as bivalent). Each bivalent is mads of two chromosomes, each split into two chromatids. The chromatids wrap around eachother, but remain joined at certain points (chaismata). At these points crossing over occurs. At the ends of prophase, the nuclear memebrance and the nucleoulus disintergrate.
  • Metaphase I…


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