Linked Life Data

8845967

Source:http://linkedlifedata.com/resource/pubmed/id/8845967

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1996-10-22
pubmed:abstractText
The alignment of ribosomal RNA (rRNA) by computer requires assumptions about the evolutionary costs for gaps in the alignment that are undefinable when uniformly applied across the entire molecule. The conservation of rRNA secondary structures exceeds that of its nucleotides, and therefore it is recommended that secondary structures guide decisions about the assignment of homologous positions for phylogenetic studies. Suggestions for alignment, data presentation, and character description are made in the context of an example from frog large subunit nuclear rRNA. Realignment improved congruence with previously published morphological conclusions and the format used in data presentation facilitated the description of character-based conclusions at each node in the cladogram. The data presented allow a discrimination between the fully resolved shortest tree and conclusions that the data actually support with any reasonable confidence: a monophyletic Pipanura, Neobatrachia, and Ranoidea without further resolution within the Neobatrachia.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1055-7903
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
314-30
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Use of rRNA secondary structure in phylogenetic studies to identify homologous positions: an example of alignment and data presentation from the frogs.
pubmed:affiliation
Department of Zoology, Brigham Young University, Provo, Utah 84602, USA.
pubmed:publicationType
Journal Article, Comparative Study