The process of appearance of recombination nodules occurs at which substage of prophase I in meiosis?

[Image showing recombination nodules during the pachytene stage of meiosis]During the Pachytene stage of Prophase I, homologous chromosomes are fully synapsed. At this stage, recombination nodules appear on the synaptonemal complex, marking the sites where crossing over will occur between non-sister chromatids.