zygotene

noun Cell Biology.

1. the second stage of prophase in meiosis, during which strands of homologous chromosomes line up and become pairs.

noun

1. the second stage of the prophase of meiosis, during which homologous chromosomes become associated in pairs (bivalents)

n.

1. The stage of meiotic prophase during which the precise point-for-point pairing of the homologous chromosomes begins.zygonema