Drosophila Repleta
Mostrando 25-36 de 38 artigos, teses e dissertações.
-
25. Two new species of the Drosophila serido sibling set (Diptera, Drosophilidae)
Drosophila antonietae sp. nov. and D. gouveai sp. nov. are members of the D. buzzatii cluster of the D. repleta species group of the genus Drosophila. They can be distinguished from their cryptic species, D. borborema Vilela & Sene, 1977, D. koepferae Fontdevila & Wasserman, 1988, D. serido Vilela & Sene, 1977, and D. seriema Tidon-Sklorz & Sene, 1995 by mor
Iheringia. Série Zoologia. Publicado em: 25/05/2001
-
26. Characterization of ribosomal DNA (rDNA) in Drosophila arizonae
O DNA ribossômico (rDNA) é uma família multigênica composta de um ou mais aglomerados de unidades de repetição (RU). Cada unidade consiste de seqüências altamente conservadas que codificam os rRNAs 18S, 5.8S e 28S, intercaladas com seqüências regulatórias pouco conservadas entre as espécies. Neste trabalho analisamos o rDNA de Drosophila arizonae
Genetics and Molecular Biology. Publicado em: 2000-06
-
27. Chromosomal Monomorphism in Brazilian and Argentine Populations of Drosophila Simulans and Drosophila Repleta
-
28. Chromosomal Homology and Molecular Organization of Muller's Elements D and E in the Drosophila Repleta Species Group
Thirty-three DNA clones containing protein-coding genes have been used for in situ hybridization to the polytene chromosomes of two Drosophila repleta group species, D. repleta and D. buzzatii. Twenty-six clones gave positive results allowing the precise localization of 26 genes and the tentative identification of another nine. The results were fully consist
-
29. On the Dot Chromosomes of Drosophila Repleta and D. Hydei
-
30. CYTOLOGICAL AND PHYLOGENETIC RELATIONSHIPS IN THE REPLETA GROUP OF THE GENUS DROSOPHILA*
-
31. How Malleable is the Eukaryotic Genome? Extreme Rate of Chromosomal Rearrangement in the Genus Drosophila
During the evolution of the genus Drosophila, the molecular organization of the major chromosomal elements has been repeatedly rearranged via the fixation of paracentric inversions. Little detailed information is available, however, on the extent and effect of these changes at the molecular level. In principle, a full description of the rate and pattern of c
Cold Spring Harbor Laboratory Press.
-
32. Phylogenetic Relationships among DROSOPHILA LONGICORNIS, DROSOPHILA PROPACHUCA and DROSOPHILA PACHUCA, a Triad of Sibling Species
Drosophila longicornis, D. propachuca and D. pachuca comprise a triad of sibling species. They are morphologically indistinguishable, sympatric forms that, under laboratory conditions, are capable of exchanging genes through the production of fertile F1 females. However, we have no evidence for introgressive hybridization in nature. The chromosomal constitu
-
33. The Distribution of Enzyme and Inversion Polymorphism over the Genome of Drosophila: Evidence against Balancing Selection
In species of the repleta group of Drosophila about 70% of the electrophoretic variability is absorbed by the same chromosome which absorbs about 70% of the cytological variability of the group. However, this does not imply that inversions are actively involved in the maintenance of protein variation. A comparison of cytological and electrophoretic variation
-
34. The Evolutionary History of DROSOPHILA BUZZATII. III. Cytogenetic Relationships between Two Sibling Species of the Buzzatii Cluster
Drosophila buzzatii has been found sympatric in Argentina with a closely-related sibling species, D. serido. The biogeographical, reproductive and chromosomal data allow us to combine these species into an evolutionary unit, the buzzatii cluster. Salivary gland chromosomes also have been used to determine their phylogenetic relationships with other closely r
-
35. Characterization of the Structure and Evolution of the Adh Region of Drosophila Hydei
Drosophila of the repleta group have a duplication of the gene which encodes alcohol dehydrogenase (ADH). We report the nucleotide sequence of an 8.4-kb region of genomic DNA of Drosophila hydei which includes the entire Adh region. Analysis of this sequence reveals similarity in organization to the Adh region of Drosophila mojavensis and Drosophila mulleri
-
36. Origin and Evolution of a New Gene Descended from Alcohol Dehydrogenase in Drosophila
Drosophila alcohol dehydrogenase (Adh) is highly conserved in size, organization, and amino acid sequence. Adh-ψ was hypothesized to be a pseudogene derived from an Adh duplication in the repleta group of Drosophila; however, several results from molecular analyses of this gene conflict with currently held notions of molecular evolution. Perhaps the most di