noun Cell Biology.
the second stage of prophase in meiosis, during which strands of homologous chromosomes line up and become pairs.
Origin of zygotene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the second stage of the prophase of meiosis, during which homologous chromosomes become associated in pairs (bivalents)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
The stage of meiotic prophase during which the precise point-for-point pairing of the homologous chromosomes begins.zygonema
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.