We conducted a phylogenetic analysis of DNA sequences from 3 adjacent genes (12S rRNA, tRNAVal, and 16S rRNA) in the mitochondrial genome from representatives of 14 phyllostomid genera including 7 species of Tonatia. Previous studies of the systematic relationships within Tonatia document that some members of this group are extremely divergent from others. Data on mitochondrial DNA sequence dep...

A portion of the mitochondrial DNA from the 3' terminal of gene 12S rRNA to the 5' extremity of 16S rRNA gene has been amplified by PCR from Salamandra atra aurorae genomic DNA in order to define the taxonomic position of S. atra aurorae within the Salamandra species. Analysis of the molecular data indicated that S. a. aurorae is quite different from S. salamandra, whereas S. a. aurorae and S. ...

A 487-bp fragment of the mitochondrial 16S rRNA gene was sequenced in 26 species of the circumtropical lizard genus Mabuya and used to analyze phylogenetic relationships within the genus. The species from Africa and Madagascar formed a monophyletic group relative to the included Asian and South American taxa. The Malagasy species included (M. elegans, M. cf. dumasi, and M. comorensis) did not a...

Higher-level caenophidian snake relationships are inferred from sequence analyses of one nuclear gene (C-mos) and three mitochondrial genes (12S rRNA, 16S rRNA and ND4). Caenophidians, which are haenophidian closest relatives, have an Asiatic origin. An African clade comprising atractaspidids, psammophiines, 'lamprophiines' and 'pseudoxyrhophiines' is identified. We discern no evolutionary tren...

Aligning RNA sequences can be a challenging task. Automatic sequence alignment programs typically align sequences only with respect to primary sequence, and as a result may yield spurious alignments. Incorporating information on RNA secondary structure can improve the alignment (Kjer, 1995; Titus and Frost, 1996), but this must usually be done by hand. Various algorithms and programs exist that...

We have analyzed Leishmania tarentolae mitochondrial ribonucleoprotein (RNP) complexes using the 9S small subunit (SSU) rRNA and the 12S large subunit (LSU) rRNA as markers, and have identified a 50S RNP particle as the putative mitochondrial monosome, a 40S particle as the putative LSU and a 30S particle as the putative SSU. These assignments are supported by morphological analysis by cryo-ele...

Abstract The superfamily Buccinoidea is distributed across the oceans of world from Arctic Ocean to Antarctic and intertidal abyssal depths. It encompasses 3351 recent species in 337 genera. latest taxonomic account recognized eight full families. For first time, monophyly relationships among families are tested with molecular data supplemented by anatomical radula data. Five genetic markers we...