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Full-Text Articles in Genetics and Genomics

Actin Gene Family Evolution And The Phylogeny Of Coleoid Cephalopods (Mollusca: Cephalopoda), David B. Carlini, Kimberly S. Reece, John Graves Aug 2000

Actin Gene Family Evolution And The Phylogeny Of Coleoid Cephalopods (Mollusca: Cephalopoda), David B. Carlini, Kimberly S. Reece, John Graves

VIMS Articles

Phylogenetic analysis conducted on a 784-bp fragment of 82 actin gene sequences of 44 coleoid cephalopod taxa, along with results obtained from genomic Southern blot analysis, confirmed the presence of at least three distinct actin loci in coleoids. Actin isoforms were characteri zed through phylogenetic analysis of representative cephalopod sequences from each of the three isoforms, along with translated actin cDNA sequences from a diverse array of metazoan taxa downloaded from GenBank. One of the three isoforms found in cephalopods was closely related to actin sequences expressed in the muscular tissues of other molluscs. A second isoform was most similar …


A New Species Of Garter Snake From Western Mexico, Roger Conant May 2000

A New Species Of Garter Snake From Western Mexico, Roger Conant

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.


New World Nine-Primaried Oscine Relationships: Constructing A Molecular Framework, John Klicka, Kevin P. Johnson, Scott M. Lanyon Apr 2000

New World Nine-Primaried Oscine Relationships: Constructing A Molecular Framework, John Klicka, Kevin P. Johnson, Scott M. Lanyon

Ornithology Program (HRC)

Historically, a paucity of comparative morphological characters has led to much debate regarding relationships within and among the major lineages of New World nine-primaried oscines. More recently, DNA-DNA hybridization studies have provided novel and testable hypotheses of relationships, although no consensus has been reached. For 40 songbird taxa, we obtained 1,929 base pairs (bp) of DNA sequence from the mitochondrial cytochrome-b (894 bp) and NADH dehydrogenase subunit 2 (1,035 bp) genes. Phylogenetic analyses confirm the monophyly of this assemblage as traditionally defined. The lineages delineated historically on morphological grounds are retained; finches (Fringillinae) are sister to a well-supported clade …