noun[mass noun] Biology
The first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids).
- Early recombination nodules are protein complexes 100 nm in diameter that are associated with forming synaptonemal complexes during leptotene and zygotene of meiosis.
- Early meiotic stages, leptotene or zygotene, were observed.
- The bouquet forms at late leptotene and early zygotene and is coincident with chromosome pairing.
Early 20th century: from lepto- 'narrow, fine' + Greek tainia 'band, ribbon'.
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Line breaks: lepto|tene
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