2 divisions of the nucleus

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Presentation transcript:

2 divisions of the nucleus Meiosis 2 divisions of the nucleus

DNA is replicated forming homologous chromosomes

Prophase 1 Chromosomes condense Nuclear envelope disappears Crossing over occurs between Homologous chromosomes.

Metaphase 1 Pairs of homologous chromosomes move to the equator

Anaphase 1 Homologous chromosomes move to opposite poles

Telophase 1 Chromosomes gather at the poles Cytokinesis

Prophase 2 New spindle forms around chromosomes

Metaphase 2 Chromosomes line up at equator

Anaphase 2 Centromere divides Chromatids (now chromosomes) move to opposite poles

Telophase 2 Nuclear envelope forms around each set of chromosomes Cytokinesis Results in 4 haploid cells (gametes)

Genetic Variation Variation generated quickly

Crossing over DNA exchange between homologous chromosomes