Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies

The meiotic behavior of Robertsonian heterozygotes of Dichroplus pratensis was analyzed in order to establish the nature of the fusion polymorphisms (stable or transient) that occur in the species. The range of fusion frequencies varies widely for each fusion studied and populations with extreme fre...

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Detalles Bibliográficos
Autores principales: Mirol, P.M., Bidau, C.J.
Formato: JOUR
Materias:
Grasshopper
polymorphism
Robertsonian translocation
segregation
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00166707_v84_n3_p171_Mirol
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00166707_v84_n3_p171_Mirol
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spelling todo:paper_00166707_v84_n3_p171_Mirol2023-10-03T14:14:28Z Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies Mirol, P.M. Bidau, C.J. Grasshopper polymorphism Robertsonian translocation segregation The meiotic behavior of Robertsonian heterozygotes of Dichroplus pratensis was analyzed in order to establish the nature of the fusion polymorphisms (stable or transient) that occur in the species. The range of fusion frequencies varies widely for each fusion studied and populations with extreme frequencies exist, which could indicate a tendency for the loss or fixation of a given rearrangement. Our results revealed that no significant correlation exists between orientation (convergent and non-convergent) in PMI and MI and fusion frequency, nor between aneuploidy and fusion frequency. Thus, orientation and segregation seem to be independent of the frequencies of the fusions, which also do not appear to affect severely the fertility of heterozygotes. Our data suggest that the polymorphisms are, at least, cytogenetically stable. © 1991 Kluwer Academic Publishers. Fil:Mirol, P.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bidau, C.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00166707_v84_n3_p171_Mirol
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Grasshopper
polymorphism
Robertsonian translocation
segregation
spellingShingle Grasshopper
polymorphism
Robertsonian translocation
segregation
Mirol, P.M.
Bidau, C.J.
Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
topic_facet Grasshopper
polymorphism
Robertsonian translocation
segregation
description The meiotic behavior of Robertsonian heterozygotes of Dichroplus pratensis was analyzed in order to establish the nature of the fusion polymorphisms (stable or transient) that occur in the species. The range of fusion frequencies varies widely for each fusion studied and populations with extreme frequencies exist, which could indicate a tendency for the loss or fixation of a given rearrangement. Our results revealed that no significant correlation exists between orientation (convergent and non-convergent) in PMI and MI and fusion frequency, nor between aneuploidy and fusion frequency. Thus, orientation and segregation seem to be independent of the frequencies of the fusions, which also do not appear to affect severely the fertility of heterozygotes. Our data suggest that the polymorphisms are, at least, cytogenetically stable. © 1991 Kluwer Academic Publishers.
format JOUR
author Mirol, P.M.
Bidau, C.J.
author_facet Mirol, P.M.
Bidau, C.J.
author_sort Mirol, P.M.
title Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
title_short Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
title_full Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
title_fullStr Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
title_full_unstemmed Meiotic behavior of Robertsonian heterozygotes in populations of Dichroplus pratensis (Acrididae) with different fusion frequencies
title_sort meiotic behavior of robertsonian heterozygotes in populations of dichroplus pratensis (acrididae) with different fusion frequencies
url http://hdl.handle.net/20.500.12110/paper_00166707_v84_n3_p171_Mirol
work_keys_str_mv AT mirolpm meioticbehaviorofrobertsonianheterozygotesinpopulationsofdichropluspratensisacrididaewithdifferentfusionfrequencies
AT bidaucj meioticbehaviorofrobertsonianheterozygotesinpopulationsofdichropluspratensisacrididaewithdifferentfusionfrequencies
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