Federoff

Interphase  Chromosomes Duplicate  Prepares to Divide

Prophase I  Homologous Chromosomes pair up to form a Tetrad  Crossing-over Occurs

Metaphase I  Homologous Chromosomes line up across the center of the cell

Anaphase I  Spindle fibers pull each Homologous Chromosome pair toward opposite ends of the cell

Telophase I and Cytokinesis  Telophase – Nuclear membrane reforms around each cluster of chromosomes  Cytokinesis – Follows Telophase, forming two new cells

Prophase II  Chromosomes (with 2 Chromatids) become Visible

Metaphase II  Chromosomes line up at the center of the cell

Anaphase II  Paired (Sister) Chromatids separate

Telophase II and Cytokinesis  Telophase II – Nuclear membrane reforms  Cytokinesis – 4 new genetically different, haploid cells are produced