1) Phase 2) Stage 
Prophase I in meiosis consists of four sub steps: (1)leptotene (2)zygotene (3)pachytene (4)diplotene During leptotene the chromosomes condense. During zygotene they pair up. During pachytene they recombine During diplotene they synthesise. ...
<cell biology, genetics> Classical term for the first stage of prophase I of meiosis, during which the chromosomes condense and become visible. ... (18 Nov 1997) ... 
(lep´to-tēn) the first stage of prophase in meiosis I, in which the chromosomes are threadlike.
Classical term for the first stage of prophase I of meiosis, during which the chromosomes condense and become visible.
Type: Term Pronunciation: lep′tō-tēn Definitions: 1. Early stage of prophase in meiosis in which the chromosomes contract and become visible as long filaments well separated from each other. Synonyms: leptonema
[n] - the first stage of the prophase of meiosis
noun the first stage of the prophase of meiosis