sentences:  Sexual reproduction is by the formation of zygospores, which contain high concentrations of triglycerol-rich lipids and phosphatidylcholine.Zygospores can persist for long periods of time, and their germination is dependent on a cytoplasmic regulatory system that sustains dormancy and forestalls germination in the presence of unfavorable growth conditions.Zygospores range in size from 40-80μm.