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Adaptive Reptile Color Variation and the Evolution of the MC1R Gene
(The Society for the Study of Evolution, 2004)
The wealth of information on the genetics of pigmentation and the clear fitness consequences of many pigmentation phenotypes provide an opportunity to study the molecular basis of an ecologically important trait. The ...
Ecological Genetics of Adaptive Color Polymorphism in Pocket Mice: Geographic Variation in Selected and Neutral Genes
(The Society for the Study of Evolution, 2004)
Patterns of geographic variation in phenotype or genotype may provide evidence for natural selection. Here, we compare phenotypic variation in color, allele frequencies of a pigmentation gene (the melanocortin-1 receptor, ...
EVOLUTION: Parallel Evolution Is in the Genes
(American Association for the Advancement of Science (AAAS), 2004)
Complex plumage patterns seem to have evolved independently among many very different bird species, a striking example of parallel evolution. In their Perspective, Hoekstra and Price discuss the molecular basis for similar ...
Emergence of Cooperation and Evolutionary Stability in Finite Populations
(Nature Publishing Group, 2004)
To explain the evolution of cooperation by natural selection has been a major goal of biologists since Darwin. Cooperators help others at a cost to themselves, while defectors receive the benefits of altruism without ...
The Enigmatic Planctomycetes May Hold a Key to the Origins of Methanogenesis and Methylotrophy
(Oxford University Press, 2004)
Methanogenesis and methane oxidation are the major biological processes affecting the global cycling of the powerful greenhouse gas methane. To carry out the two alternative bioconversions, Nature has cleverly recycled key ...
Development of an Insertional Expression Vector System for Methylobacterium Extorquens AM1 and Generation of Null Mutants Lacking mtdA and/or fch
(Society for General Microbiology, 2004)
Over the past few years, the genetic 'toolkit' available for use with <i>Methylobacterium extorquens</i> AM1 has expanded significantly. Here a further advance is presented and demonstrated, an insertional expression system ...
Multiple Formaldehyde Oxidation/Detoxification Pathways in Burkholderia Fungorum LB400
(American Society for Microbiology, 2004)
<i>Burkholderia</i> species are free-living bacteria with a versatile metabolic lifestyle. The genome of <i>B. fungorum</i> LB400 is predicted to encode three different pathways for formaldehyde oxidation: an NAD-linked, ...
Phosphatized Multicellular Algae in the Neoproterozoic Doushantuo Formation, China, and the Early Evolution of Florideophyte Red Algae
(Botanical Society of America, 2004)
Phosphatic sediments of the Late Neoproterozoic (ca. 600 million years old [Myr]) Doushantuo Formation at Weng'an, South China, contain fossils of multicellular algae preserved in anatomical detail. As revealed by light ...
Hitchhiking and Recombination in Birds: Evidence from Mhc-linked and Unlinked Loci in Red-winged Blackbirds (Agelaius phoeniceus)
(Cambridge University Press, 2004)
Hitchhiking phenomena and genetic recombination have important consequences for a variety of fields for which birds are model species, yet we know virtually nothing about naturally occurring rates of recombination or the ...
Elatinaceae are Sister to Malpighiaceae; Peridiscaceae Belong to Saxifragales
(Botanical Society of America, 2004)
Phylogenetic data from plastid (ndhF and rbcL) and nuclear (PHYC) genes indicate that, within the order Malpighiales, Elatinaceae are strongly supported as sister to Malpighiaceae. There are several putative morphological ...