Artículo
Abstract:
Two populations of Trimerotropis pallidipennis from Mendoza (MA) and Uspallata (UA) (Argentina), polymorphic with respect to centric shifts and B-chromosomes, were cytologically analysed. The medium-sized chromosomes from both populations were polymorphic for 7 (MA) and 5 (UA) inversions respectively. A clear tendency towards chiasma localisation was evident in both populations although they differ significantly with respect to mean frequencies of both total and interstitial chiasmata. The analysis of these frequencies in relation to the polymorphisms showed that in UA, the inversions do not affect chiasma formation while in MA, total chiasma frequency is negatively correlated in a significant fashion with the number of heteromorphic bivalents. This decrease is related, in non-B-carriers, to a significant increase of interstitial chiasmata. Therefore a redistribution of chiasmata, which could increase genetic recombination, is evident. The successful maintenance of polymorphisms in each population might depend, in part, on their effects on recombination, which could be related with the local requirements of genetic variability. © 1988 Kluwer Academic Publishers.
Registro:
| Documento: | Artículo |
| Título: | Effects of centric-shift polymorphisms on chiasma conditions in Trimerotropis pallidipennis (Oedipodinae:Acrididae) |
| Autor: | Confalonieri, V.A. |
| Filiación: | Laboratorio de Genética, Depto. de Cs Biológicas, Fac. Cs. Exactas y Nat., Universidad de Buenos Aires, Buenos Aires, 1428, Argentina |
| Año: | 1988 |
| Volumen: | 76 |
| Número: | 3 |
| Página de inicio: | 171 |
| Página de fin: | 179 |
| DOI: | http://dx.doi.org/10.1007/BF00140221 |
| Título revista: | Genetica |
| Título revista abreviado: | Genetica |
| ISSN: | 00166707 |
| CODEN: | GENEA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v76_n3_p171_Confalonieri |
Referencias:
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Citas:
---------- APA ----------
(1988) . Effects of centric-shift polymorphisms on chiasma conditions in Trimerotropis pallidipennis (Oedipodinae:Acrididae). Genetica, 76(3), 171-179.http://dx.doi.org/10.1007/BF00140221
---------- CHICAGO ----------
Confalonieri, V.A. "Effects of centric-shift polymorphisms on chiasma conditions in Trimerotropis pallidipennis (Oedipodinae:Acrididae)" . Genetica 76, no. 3 (1988) : 171-179.http://dx.doi.org/10.1007/BF00140221
---------- MLA ----------
Confalonieri, V.A. "Effects of centric-shift polymorphisms on chiasma conditions in Trimerotropis pallidipennis (Oedipodinae:Acrididae)" . Genetica, vol. 76, no. 3, 1988, pp. 171-179.http://dx.doi.org/10.1007/BF00140221
---------- VANCOUVER ----------
Confalonieri, V.A. Effects of centric-shift polymorphisms on chiasma conditions in Trimerotropis pallidipennis (Oedipodinae:Acrididae). Genetica. 1988;76(3):171-179.http://dx.doi.org/10.1007/BF00140221
