The chromosomes condense, and the nuclear envelope breaks down. crossing-over occurs.
Pairs of homologous chromosomes move to the equator of the cell.
Homologous chrmosomes move to the oppisite poles of the cell.
Chromosomes gather at the poles of the cells. the cytoplasm divides.
A new spidle forms around the chromosomes.
Chromosomes line up at the equator.
Centromeres divides. chromatids move to the opposite poles of the cells.
A nuclear envelope forms around each set of chromosomes. the cytoplasm divides.
Formation of Gamete
Maintenance of Chromosome Number
Assortment of Chromosome
Basic Relationship of Organism