meiosis Flashcards
interphase
Cell in normal non-dividing condition with chromosomes long and thread-like
early prophase 1
Chromosomes contract, becoming more clearly visible. Nucleolus shrinks
mid prophase 1
Homologous chromosomes come together (synapsis) forming a bivalent
late prophase 1
Each chromosome seen to consist of a pair of chromosome
metaphase
Chromosomes arrange themselves on equator of spindle
anaphase 1
Homologous chromosomes part company and migrate to opposite poles of the cell
telophase 1
The chromosomes have reached their destination and the cell constricts across the middle as in mitosis
metaphase 2
Chromosome arrange themselves on the spindle in the usual way
prophase 2
2 daughter cells prepare for the second meiotic division : centrioles have replicated and a new spindle is formed
anaphase 2
Chromatids part company and migrate to opposite poles of the cell
telophase 2
Cell constricts across the middle and the nuclear membrane and nucleoli are reformed as at the end of mitosis
Chromosomes regain their threadlike form and the cells go into the resting phase (interphase)