Definition of leptotene in English:

leptotene

noun ˈlɛptə(ʊ)tiːnˈleptəˌtēn

mass nounBiology

The first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids).
〔生〕细线期（细胞减数分裂前期第一阶段，其间每一个染色体显现为两条细线）
Example sentencesExamples
- The bouquet forms at late leptotene and early zygotene and is coincident with chromosome pairing.
- 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.
- That association presumably assists in pairing and is later lost during leptotene and replaced with a loose bouquet formation in zygotene.

Origin

Early 20th century: from lepto- 'narrow, fine' + Greek tainia 'band, ribbon'.

Definition of leptotene in US English:

leptotene

nounˈleptəˌtēn

Biology

The first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids).
〔生〕细线期（细胞减数分裂前期第一阶段，其间每一个染色体显现为两条细线）
Example sentencesExamples
- Early recombination nodules are protein complexes 100 nm in diameter that are associated with forming synaptonemal complexes during leptotene and zygotene of meiosis.
- That association presumably assists in pairing and is later lost during leptotene and replaced with a loose bouquet formation in zygotene.
- Early meiotic stages, leptotene or zygotene, were observed.
- The bouquet forms at late leptotene and early zygotene and is coincident with chromosome pairing.

Origin

Early 20th century: from lepto- ‘narrow, fine’ + Greek tainia ‘band, ribbon’.

词汇	leptotene
释义	Definition of leptotene in English: leptotene noun ˈlɛptə(ʊ)tiːnˈleptəˌtēn mass nounBiology The first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids). 〔生〕细线期（细胞减数分裂前期第一阶段，其间每一个染色体显现为两条细线） Example sentencesExamples The bouquet forms at late leptotene and early zygotene and is coincident with chromosome pairing. 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. That association presumably assists in pairing and is later lost during leptotene and replaced with a loose bouquet formation in zygotene. Origin Early 20th century: from lepto- 'narrow, fine' + Greek tainia 'band, ribbon'. Definition of leptotene in US English: leptotene nounˈleptəˌtēn Biology The first stage of the prophase of meiosis, during which each chromosome becomes visible as two fine threads (chromatids). 〔生〕细线期（细胞减数分裂前期第一阶段，其间每一个染色体显现为两条细线） Example sentencesExamples Early recombination nodules are protein complexes 100 nm in diameter that are associated with forming synaptonemal complexes during leptotene and zygotene of meiosis. That association presumably assists in pairing and is later lost during leptotene and replaced with a loose bouquet formation in zygotene. Early meiotic stages, leptotene or zygotene, were observed. The bouquet forms at late leptotene and early zygotene and is coincident with chromosome pairing. Origin Early 20th century: from lepto- ‘narrow, fine’ + Greek tainia ‘band, ribbon’.
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