Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)

The basic karyotype of Dichroplus elongatus is composed of In = 22 AA + XO in males. Two separate individuals heterozygous for supernumerary segments on pairs 8 and 9 respectively and four individuals carrying mitotically unstable B-chromososmes have been detected in a population from Tucumán (Argen...

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Autor principal: Vilardi, J.C.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00087114_v38_n2_p147_Vilardi
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00087114_v38_n2_p147_Vilardi
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spelling todo:paper_00087114_v38_n2_p147_Vilardi2023-10-03T14:07:43Z Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae) Vilardi, J.C. The basic karyotype of Dichroplus elongatus is composed of In = 22 AA + XO in males. Two separate individuals heterozygous for supernumerary segments on pairs 8 and 9 respectively and four individuals carrying mitotically unstable B-chromososmes have been detected in a population from Tucumán (Argentina). The total number of chiasmata and the proportion of interstitial chiasmata per cell were compared between stages from early diplotene to MI. These comparisons indicated that terminalization in this species is limited to diplotene. The total number of chiasmata per cell was compared between B + and B – individuals. B’s have no effect on the mean number of chiasmata per cell but tend to increase the between cell variance. © 1985 Taylor & Francis Group, LLC. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00087114_v38_n2_p147_Vilardi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The basic karyotype of Dichroplus elongatus is composed of In = 22 AA + XO in males. Two separate individuals heterozygous for supernumerary segments on pairs 8 and 9 respectively and four individuals carrying mitotically unstable B-chromososmes have been detected in a population from Tucumán (Argentina). The total number of chiasmata and the proportion of interstitial chiasmata per cell were compared between stages from early diplotene to MI. These comparisons indicated that terminalization in this species is limited to diplotene. The total number of chiasmata per cell was compared between B + and B – individuals. B’s have no effect on the mean number of chiasmata per cell but tend to increase the between cell variance. © 1985 Taylor & Francis Group, LLC.
format JOUR
author Vilardi, J.C.
spellingShingle Vilardi, J.C.
Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
author_facet Vilardi, J.C.
author_sort Vilardi, J.C.
title Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
title_short Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
title_full Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
title_fullStr Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
title_full_unstemmed Meiotic behaviour in a population of dichroplus elongatus (Orthoptera: Acrididae)
title_sort meiotic behaviour in a population of dichroplus elongatus (orthoptera: acrididae)
url http://hdl.handle.net/20.500.12110/paper_00087114_v38_n2_p147_Vilardi
work_keys_str_mv AT vilardijc meioticbehaviourinapopulationofdichropluselongatusorthopteraacrididae
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