Meiotic studies in Acanonicus hahni (Stål) (Coreidae, Heteroptera) II. Male chromosome behaviour in a spontaneous inversion mutant
The meiotic behaviour of a spontaneous chromosome rearrangement in a natural population of Acanonicus hahni (Stål)(Coreidae, Heteroptera) is described, which is concluded to be a heterozygous inversion. In this holokinetic system the principal consequences of a single cross-over located within the i...
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| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Kluwer Academic Publishers
1990
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| Sumario: | The meiotic behaviour of a spontaneous chromosome rearrangement in a natural population of Acanonicus hahni (Stål)(Coreidae, Heteroptera) is described, which is concluded to be a heterozygous inversion. In this holokinetic system the principal consequences of a single cross-over located within the inversion loop are: (a) the appearance of a double bridge at anaphase I, instead of the single dicentric bridge and acentric fragment of monocentric systems; (b) the persistence of the double bridge at telophase I which inhibits cytokinesis; (c) the occurrence of double cells at metaphase II with the restored 'bivalent' between the two nuclei; (d) the presence of single bridges at anaphase II; and (e) the production of a high percentage of abnormal spermatids. A possible explanation of all these phenomena is given and discussed. © 1990 Kluwer Academic Publishers. |
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| ISSN: | 00166707 |
| DOI: | 10.1007/BF00055237 |