noun Cell Biology.
- the third stage of prophase in meiosis, during which each chromosome pair separates into sister chromatids with some breakage and crossing over of genes.
noun
- the third stage of the prophase of meiosis during which the chromosomes become shorter and thicker and divide into chromatids
n.
- The third stage of the prophase of meiosis during which the homologous chromosomes become short and thick and divide into four distinct chromatids.