Rohit Sir , In zygotene a pair of homologous chromosomes are formed ? Please explain the meaning of Bivalent and tetrad ? I did'nt understand. Share with your friends Share 0 Mr Rohit Subhash answered this I hope you gt it now 0 View Full Answer Joktry Banerjee . answered this bivalent means 2 and tetrad means 4 0 Wajeefa Shaikh . answered this Bivalent means a 2 homologous chromosome. And tetrad means 4 chromatids. Refer the diagram . 0 Wajeefa Shaikh . answered this You can refer this image:) 0