leptotene

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Related to Leptonema: pachynema, zygonema

leptotene

(ˈlɛptəʊˌtiːn)
n
(Biochemistry) the first stage of the prophase of meiosis during which the nuclear material becomes resolved into slender single-stranded chromosomes
[C20: from lepto- + -tene, from Greek tainia band, filament]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.leptotene - the first stage of the prophase of meiosis
prophase - the first stage of meiosis
synapsis - the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis
phase, stage - any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Leptonema TIPULIDAE Macronema Hexatoma Macrostemum Limonia Plectromacronema Molophilus Plectropsyche Tipula Smicridea Limoniinae Gen.
Psphenus, Thraulodes, Leptonema, Chimarra, and baetid mayflies were collected at six of the seven sites sampled (Table 3).
Con respecto a la composicion de macroinvertebrados (Figura 2), se obtuvo que 72 generos fueron compartidos por las dos quebradas, entre ellos Anacroneuria, Andesiops, Atopsyche, Baetodes, Camelobaetidius, Cricotopus, Cyphon, Elodes, Farrodes, Gigantodax, Heterelmis, Lachlania, Leptohyphes, Leptonema, Macrelmis, Polypedilum, Prebaetodes, Rheotanytarsus, Scirtes, Simulium, Smicridea, Stenelmis y Tipula.
0.39 5.0 0.05 A Reduviidae 0.59 15.0 0.15 T Indeterminados 0.16 10.0 0.10 ae Himenopteros Adrenidae 0.33 10.0 0.10 T Chalcididae 0.19 5.0 0.05 T Formicidae Atta mexicana 0.42 5.0 0.05 T Camponotus atriceps 1.45 20.0 0.20 T Indeterminados 0.02 5.0 0.05 T Homopteros Cicadellidae 0.19 5.0 0.05 T Typhlocybinae 0.30 5.0 0.05 T Cicadidae 1.86 5.0 0.05 T Lepidopteros Noctuidae 10.19 30.0 0.30 T Indeterminados 0.30 10.0 0.10 ae Megalopteros Corydalidae Corydalus texanus 4.23 5.0 0.05 [??] Odonatos Aehsnidae (larvas) 4.00 5.0 0.05 A Libellulidae 0.55 5.0 0.05 T Indeterminados 6.40 5.0 0.05 [??] Orthopteros Gryllidae 3.78 15.0 0.15 T Indeterminados 0.52 5.0 0.05 T Trichopteros Hydropsichidae Leptonema sp.
Real-time homogeneous assay of rapid cycle polymerase chain reaction product for identification of Leptonema illini.
Para las estaciones de referencia, los taxones Grumichella, Rhagovelia, Helicopsyche, Cylloepus, Smicridea, Anacroneuria, Thraulodes, Baetodes, Simulium y Leptonema representaron el 79.4% de la abundancia relativa, y para las estaciones alteradas los taxones Leptonema, Baetodes, Simulium, Smicridea, Baetis, Anacroneuria, Thraulodes, Cylloepus, Moribaetis y Mortoniella representaron el 70.5 %.
En el Peru se han registrado 6 generos de esta familia: Centro-macronema, Leptonema, Macronema, Macrostemum, Smicridea y Synoestropsis.