Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii
Gametic disequilibria between second chromosome polymorphic arrangements and seven linked allozyme loci were estimated in seven populations of Drosophila buzzatii from Argentina. Significant and consistent associations across populations were detected for Est-1, Est-2, Aldox, and Xdh. Phenograms bas...
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paper:paper_00221503_v92_n5_p382_Rodriguez2023-06-08T14:46:41Z Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben alloenzyme article controlled study Drosophila gamete gene locus genetic association genetic distance genetic linkage genetic polymorphism heredity karyotype nonhuman population genetics priority journal species differentiation Animals Argentina Chromosomes Drosophila Female Germ Cells Haplotypes Inversion, Chromosome Isoenzymes Linkage Disequilibrium Male Phylogeny Polymorphism, Genetic Drosophila buzzatii Gametic disequilibria between second chromosome polymorphic arrangements and seven linked allozyme loci were estimated in seven populations of Drosophila buzzatii from Argentina. Significant and consistent associations across populations were detected for Est-1, Est-2, Aldox, and Xdh. Phenograms based on Nei's genetic distance showed that chromosomes carrying the 2ST arrangement were more similar to each other, irrespective of the population from which they were extracted, than to chromosomes carrying the derived 2J and 2JZ3. Restriction of recombination in heterokaryotypes seems to be the best explanation for the significant linkage disequilibria between inversions and the loci located inside the rearranged segments, for example, Est-1 and Aldox, or close to the break points, for example, Est-2. However, epistatic interactions between Xdh, which is outside the inversions and not near the break points, and loci tightly linked to the inversions, is the most likely explanation for the association between Xdh and chromosomal arrangements. Some of the associations detected in endemic Argentinean populations are coincident with data obtained in colonizing populations of the Old World and Australia. Thus historical processes that took place in the original area of the species' distribution can account for these linkage disequilibria in colonized populations of D. buzzatii. Fil:Rodriguez, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Piccinali, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Hasson, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221503_v92_n5_p382_Rodriguez http://hdl.handle.net/20.500.12110/paper_00221503_v92_n5_p382_Rodriguez |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
alloenzyme article controlled study Drosophila gamete gene locus genetic association genetic distance genetic linkage genetic polymorphism heredity karyotype nonhuman population genetics priority journal species differentiation Animals Argentina Chromosomes Drosophila Female Germ Cells Haplotypes Inversion, Chromosome Isoenzymes Linkage Disequilibrium Male Phylogeny Polymorphism, Genetic Drosophila buzzatii |
spellingShingle |
alloenzyme article controlled study Drosophila gamete gene locus genetic association genetic distance genetic linkage genetic polymorphism heredity karyotype nonhuman population genetics priority journal species differentiation Animals Argentina Chromosomes Drosophila Female Germ Cells Haplotypes Inversion, Chromosome Isoenzymes Linkage Disequilibrium Male Phylogeny Polymorphism, Genetic Drosophila buzzatii Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
topic_facet |
alloenzyme article controlled study Drosophila gamete gene locus genetic association genetic distance genetic linkage genetic polymorphism heredity karyotype nonhuman population genetics priority journal species differentiation Animals Argentina Chromosomes Drosophila Female Germ Cells Haplotypes Inversion, Chromosome Isoenzymes Linkage Disequilibrium Male Phylogeny Polymorphism, Genetic Drosophila buzzatii |
description |
Gametic disequilibria between second chromosome polymorphic arrangements and seven linked allozyme loci were estimated in seven populations of Drosophila buzzatii from Argentina. Significant and consistent associations across populations were detected for Est-1, Est-2, Aldox, and Xdh. Phenograms based on Nei's genetic distance showed that chromosomes carrying the 2ST arrangement were more similar to each other, irrespective of the population from which they were extracted, than to chromosomes carrying the derived 2J and 2JZ3. Restriction of recombination in heterokaryotypes seems to be the best explanation for the significant linkage disequilibria between inversions and the loci located inside the rearranged segments, for example, Est-1 and Aldox, or close to the break points, for example, Est-2. However, epistatic interactions between Xdh, which is outside the inversions and not near the break points, and loci tightly linked to the inversions, is the most likely explanation for the association between Xdh and chromosomal arrangements. Some of the associations detected in endemic Argentinean populations are coincident with data obtained in colonizing populations of the Old World and Australia. Thus historical processes that took place in the original area of the species' distribution can account for these linkage disequilibria in colonized populations of D. buzzatii. |
author |
Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben |
author_facet |
Rodríguez, Constantina Piccinali, Romina Valeria Levy, Estrella Mariel Hasson, Esteban Ruben |
author_sort |
Rodríguez, Constantina |
title |
Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
title_short |
Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
title_full |
Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
title_fullStr |
Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
title_full_unstemmed |
Gametic associations between inversion and allozyme polymorphisms in Drosophila buzzatii |
title_sort |
gametic associations between inversion and allozyme polymorphisms in drosophila buzzatii |
publishDate |
2001 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221503_v92_n5_p382_Rodriguez http://hdl.handle.net/20.500.12110/paper_00221503_v92_n5_p382_Rodriguez |
work_keys_str_mv |
AT rodriguezconstantina gameticassociationsbetweeninversionandallozymepolymorphismsindrosophilabuzzatii AT piccinalirominavaleria gameticassociationsbetweeninversionandallozymepolymorphismsindrosophilabuzzatii AT levyestrellamariel gameticassociationsbetweeninversionandallozymepolymorphismsindrosophilabuzzatii AT hassonestebanruben gameticassociationsbetweeninversionandallozymepolymorphismsindrosophilabuzzatii |
_version_ |
1768545270342090752 |