by: Matt and Alyssa
-the process of reduction division in which the number of chromosomes per cell are cut in half through the separation of homologous chromosomes in a diploid cell.
-formation of gametes
1 haploid + ! haploid = 1 diploid
There are 2 stages of division. The first being to separate the homologous chromosomes into 2 cells, and the second to separate the sister chromatids.
Homologous pairs become attached to each other. Crossing over may take place and increases the gene variability.
4 sister chromatids=1 tetrad
Spindle fibers arrange homologous chromosome pairs (tetrads) in the middle of the cell.