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Genomics and the origin of species
Emergent trends and gaps in understanding are identified, new approaches to more fully integrate genomics into speciation research are proposed, and an integrative definition of the field of speciation genomics is provided.
Orchid diversity: an evolutionary consequence of deception?
Evolution of reproductive isolation in plants
Plant species are typically isolated not by a single factor, but by a large number of different pre- and postzygotic barriers, and their potentially complex interactions, and this phenomenon has often been ignored to date.
Teosinte in Europe – Searching for the Origin of a Novel Weed
It is inferred that Spanish teosinte is of admixed origin, most likely involving Zea mays ssp.
Genome-wide Comparative Analysis of the GRAS Gene Family in Populus, Arabidopsis and Rice
The expansion and diversification of the GRAS gene family in Populus is highlighted and the first comprehensive analysis of this gene family is provided, suggesting that strong functional constraints have a bearing on the evolution of GRAS genes.
The genetic architecture necessary for transgressive segregation is common in both natural and domesticated populations.
- L. Rieseberg, A. Widmer, A. M. Arntz, J. Burke
- BiologyPhilosophical transactions of the Royal Society…
- 29 June 2003
The results indicate that transgressive segregation provides a general mechanism for the production of extreme phenotypes at both above and below the species level and testify to the possible creative part of hybridization in adaptive evolution and speciation.
PATTERNS OF REPRODUCTIVE ISOLATION IN MEDITERRANEAN DECEPTIVE ORCHIDS
- G. Scopece, A. Musacchio, A. Widmer, S. Cozzolino
- BiologyEvolution; international journal of organic…
- 1 November 2007
Comparison of evolutionary rates showed that the contribution of postmating barriers was more relevant in the food-deceptive species than in the sexually deceptive species, whereas premating barriers are most important in sexually deceptive orchids.
Estimating genomic diversity and population differentiation – an empirical comparison of microsatellite and SNP variation in Arabidopsis halleri
It is inferred that a few thousand random SNPs are sufficient to reliably estimate genome-wide diversity and to distinguish among populations differing in genetic variation and recommended that future analyses of genetic diversity within and differentiation among populations use randomly selected high-throughput sequencing-based SNP data.
Plant centromeric retrotransposons: a structural and cytogenetic perspective
Comprehensive analysis of the CRM clade elements showed that genuinely centromeric retrotransposons represent an active component of centromeres of a wide range of angiosperm species, implying that they play an important role in plant centromere evolution.