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Titolo:
DIFFERENTIATION OF MULLERS CHROMOSOMAL ELEMENT-D AND ELEMENT-E IN THEOBSCURA GROUP OF DROSOPHILA
Autore:
SEGARRA C; RIBO G; AGUADE M;
Indirizzi:
UNIV BARCELONA,DEPT GENET,FAC BIOL BARCELONA 08071 SPAIN CSIC,CTR INVEST & DESENVOLUPAMENT BARCELONA 08036 SPAIN
Titolo Testata:
Genetics
fascicolo: 1, volume: 144, anno: 1996,
pagine: 139 - 146
SICI:
0016-6731(1996)144:1<139:DOMCEA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
ECDYSONE-INDUCIBLE GENE; HEAT-SHOCK PROTEINS; INSITU HYBRIDIZATION; POLYTENE CHROMOSOMES; DOSAGE COMPENSATION; D-SUBOBSCURA; MELANOGASTER; HOMOLOGIES; EVOLUTION; MIRANDA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
35
Recensione:
Indirizzi per estratti:
Citazione:
C. Segarra et al., "DIFFERENTIATION OF MULLERS CHROMOSOMAL ELEMENT-D AND ELEMENT-E IN THEOBSCURA GROUP OF DROSOPHILA", Genetics, 144(1), 1996, pp. 139-146

Abstract

Twenty-two markers located on Muller's elements D or E have been mapped by in situ hybridization in six species of the obscura group of Drosophila and in D. melanogaster. The obscura species can be grouped into a Palearctic cluster (D. subobscura, D. madeirensis and D. guanche) and a Nearctic one (D. pseudoobscura, D. persimilis and D. miranda). Eleven of the probes contain known genes: E74, Acp70A, Est-5, hsp28/23 hsp83, emc, hsp70, Xdh, Acph-1, Cec and rp49. The remaining probes arerecombinant phages isolated from a D. subobscura genomic library. Allthese markers hybridize to the putative homologous chromosome or chromosomal arm of elements D and E. Thus, these elements have conserved their genic content during species divergence. Chromosomal homologies proposed previously for each element among the species of the same cluster have been compared with the present results. The distribution of markers within each element has changed considerably as inferred from pairwise comparisons of obscura species included in the two different clusters. Only chromosomal segments defined by closely linked markers have been conserved: one such segment has been detected in element D and three in element E between D. subobscura and D. pseudoobscura.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 13:23:41