| 单词 | leptotene | 
| 释义 | Word Frequency leptotene(ˈlɛptəʊˌtiːn) noun the first stage of the prophase of meiosis during which the nuclear material becomes resolved into slender single-stranded chromosomes  Word origin C20: from lepto- + -tene, from Greek tainia band, filament | 
	
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