Publication Date:
2005-12-24
Description:
The phylogenetic relationships among most metazoan phyla remain uncertain. We obtained large numbers of gene sequences from metazoans, including key understudied taxa. Despite the amount of data and breadth of taxa analyzed, relationships among most metazoan phyla remained unresolved. In contrast, the same genes robustly resolved phylogenetic relationships within a major clade of Fungi of approximately the same age as the Metazoa. The differences in resolution within the two kingdoms suggest that the early history of metazoans was a radiation compressed in time, a finding that is in agreement with paleontological inferences. Furthermore, simulation analyses as well as studies of other radiations in deep time indicate that, given adequate sequence data, the lack of resolution in phylogenetic trees is a signature of closely spaced series of cladogenetic events.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rokas, Antonis -- Kruger, Dirk -- Carroll, Sean B -- New York, N.Y. -- Science. 2005 Dec 23;310(5756):1933-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Laboratory of Molecular Biology, R. M. Bock Labs, University of Wisconsin-Madison, 1525 Linden Drive, Madison, WI 53706, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16373569" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
*Biological Evolution
;
Computer Simulation
;
DNA, Complementary
;
Fungi/classification
;
Genes
;
Humans
;
Invertebrates/classification/genetics
;
Models, Biological
;
Phylogeny
;
Sequence Analysis, DNA
;
Time
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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