Erratum: Multilocus genetic structure, characterization, and relationships of Populus × canadensis cultivars

Genome ◽  
1989 ◽  
Vol 32 (4) ◽  
pp. 733-733
Author(s):  
Om P. Rajora ◽  
Louis Zsuffa
Keyword(s):  
Genetic Structure ◽  
Structure Characterization ◽  
Multilocus Genetic Structure

Differentiation underground: Range-wide multilocus genetic structure of the silvery mole-rat does not support current taxonomy based on mitochondrial sequences

2018 ◽  
Vol 93 ◽  
pp. 82-92 ◽  
Author(s):  
Josef Bryja ◽  
Hana Konvičková ◽  
Anna Bryjová ◽  
Ondřej Mikula ◽  
Rhodes Makundi ◽  
...  
Keyword(s):  
Genetic Structure ◽  
Mole Rat ◽  
Mitochondrial Sequences ◽  
Multilocus Genetic Structure

scholarly journals Evolution of multilocus genetic structure in Avena hirtula and Avena barbata.

Genetics ◽  
1993 ◽  
Vol 135 (4) ◽  
pp. 1125-1139 ◽  
Author(s):  
R W Allard ◽  
P García ◽  
L E Sáenz-de-Miera ◽  
M Pérez de la Vega
Keyword(s):  
Natural Selection ◽  
Genetic Structure ◽  
Allelic Diversity ◽  
Adaptive Landscape ◽  
Epistatic Interactions ◽  
Avena Barbata ◽  
Local Populations ◽  
Diploid Ancestor ◽  
Multilocus Genetic Structure

Abstract Avena barbata, an autotetraploid grass, is much more widely adapted than Avena hirtula, its diploid ancestor. We have determined the 14-locus genotype of 754 diploid and 4751 tetraploid plants from 10 and 50 Spanish sites, respectively. Allelic diversity is much greater in the tetraploid (52 alleles) than in the diploid (38 alleles): the extra alleles of the tetraploid were present in nonsegregating heteroallelic quadriplexes. Seven loci were monomorphic for the same allele (genotypically 11) in all populations of the diploid: five of these loci were also monomorphic for the same allele (genotypically 1111) in all populations of the tetraploid whereas two loci each formed a heteroallelic quadriplex (1122) that was monomorphic or predominant in the tetraploid. Seven of the 14 loci formed one or more highly successful homoallelic and/or heteroallelic quadriplexes in the tetraploid. We attribute much of the greater heterosis and wider adaptedness of the tetraploid to favorable within-locus interactions and interlocus (epistatic) interactions among alleles of the loci that form heteroallelic quadriplexes. It is difficult to account for the observed patterns in which genotypes are distributed ecogeographically except in terms of natural selection favoring particular alleles and genotypes in specific habitats. We conclude that natural selection was the predominant integrating force in shaping the specific genetic structure of different local populations as well as the adaptive landscape of both the diploid and tetraploid.

scholarly journals Genetic structure characterization of Chileans reflects historical immigration patterns

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Susana Eyheramendy ◽  
Felipe I. Martinez ◽  
Federico Manevy ◽  
Cecilia Vial ◽  
Gabriela M. Repetto
Keyword(s):  
Genetic Structure ◽  
Structure Characterization

scholarly journals Evolution of multilocus genetic structure in an experimental barley population.

Genetics ◽  
1992 ◽  
Vol 131 (4) ◽  
pp. 957-969
Author(s):  
R W Allard ◽  
Q Zhang ◽  
M A Maroof ◽  
O M Muona
Keyword(s):  
Natural Selection ◽  
Genetic Structure ◽  
Quantitative Traits ◽  
Transition Period ◽  
Single Locus ◽  
Heterogeneous Environment ◽  
Number Of Clusters ◽  
Allelic Frequencies ◽  
Barley Population ◽  
Multilocus Genetic Structure

Abstract Data from 311 selfed families isolated from four generations (F8, F13, F23, F45) of an experimental barley population were analyzed to determine patterns of change in character expression for seven quantitative traits, and in single-locus allelic frequencies, and multilocus genetic structure, for 16 Mendelian loci that code for discretely recognizable variants. The analyses showed that large changes in single-locus allelic frequencies and major reorganizations in multilocus genetic structure occurred in each of the generation-to-generation transitions examined. Although associations among a few traits persisted over generations, dynamic dissociations and reassociations occurred among several traits in each generation-transition period. Overall, the restructuring that occurred was characterized by gradual decreases in the number of clusters of associated traits and increases in the number of traits within each cluster. The observed changes in single-locus frequencies and in multilocus genetic structure were attributed to interplay among various evolutionary factors among which natural selection acting in a temporally heterogeneous environment was the guiding force.

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