Previously, the activity of DNA polymeraseawas found in the meiotic prophase I including non-S phase stages, in the basidiomycetes,Coprinus cinereus. To study DNA poly-merasea during meiosis, we cloned cDNAs for the C. cinereusDNApolymeraseacatalytic subunit (p140) and C. cinereusprimase small subunit (p48). Northern analysis indicated that both p140 and p48 are expressed not only at S phase but also during the leptotene/zygotene stages of meiotic prophase I.