In meiosis I, the bivalent chromosome are more clearly visible as tetrads during A Zygotene B Diplotene C Pachytene D Diakinesis
Option A. During meiosis-I, in zygotene phase of prophase-I, the bivalent chromosomes clearly appear as tetrads. Here, the homologous chromosomes align together to form tetrads. These tetrads are also known as bivalents and they undergo recombination in the pachytene stage.
