scholarly journals Landscape-Genetic Analysis of Population Structure in the Texas Gray Fox Oral Rabies Vaccination Zone

2009 ◽  
Vol 73 (8) ◽  
pp. 1292-1299 ◽  
Author(s):  
Randy W. Deyoung ◽  
Angeline Zamorano ◽  
Brian T. Mesenbrink ◽  
Tyler A. Campbell ◽  
Bruce R. Leland ◽  
...  
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Gray Fox ◽  
Landscape Genetic ◽  
Rabies Vaccination

scholarly journals A Quantitative Genetic Analysis of Nuclear-Cytoplasmic Male Sterility in Structured Populations of Silene vulgaris

Genetics ◽  
2001 ◽  
Vol 158 (2) ◽  
pp. 833-841 ◽  
Author(s):  
Douglas R Taylor ◽  
Matthew S Olson ◽  
David E McCauley
Keyword(s):  
Population Structure ◽  
Sex Ratio ◽  
Genetic Analysis ◽  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Sex Expression ◽  
Silene Vulgaris ◽  
Population Variance ◽  
Quantitative Genetic ◽  
Quantitative Genetic Analysis

Abstract Gynodioecy, the coexistence of functionally female and hermaphroditic morphs within plant populations, often has a complicated genetic basis involving several cytoplasmic male-sterility factors and nuclear restorers. This complexity has made it difficult to study the genetics and evolution of gynodioecy in natural populations. We use a quantitative genetic analysis of crosses within and among populations of Silene vulgaris to partition genetic variance for sex expression into nuclear and cytoplasmic components. We also use mitochondrial markers to determine whether cytoplasmic effects on sex expression can be traced to mitochondrial variance. Cytoplasmic variation and epistatic interactions between nuclear and cytoplasmic loci accounted for a significant portion of the variation in sex expression among the crosses. Source population also accounted for a significant portion of the sex ratio variation. Crosses among populations greatly enhanced the dam (cytoplasmic) effect, indicating that most among-population variance was at cytoplasmic loci. This is supported by the large among-population variance in the frequency of mitochondrial haplotypes, which also accounted for a significant portion of the sex ratio variance in our data. We discuss the similarities between the population structure we observed at loci that influence sex expression and previous work on putatively neutral loci, as well as the implications this has for what mechanisms may create and maintain population structure at loci that are influenced by natural selection.

Molecular Genetic Analysis of Population Structure of the Great Zhuz Kazakh Tribal Union Based on Y-Chromosome Polymorphism

2018 ◽  
Vol 33 (2) ◽  
pp. 91-96
Author(s):  
Y. Y. Ashirbekov ◽  
A. V. Khrunin ◽  
D. M. Botbayev ◽  
A. M. Belkozhaev ◽  
A. O. Abaildayev ◽  
...  
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Y Chromosome ◽  
Molecular Genetic ◽  
Molecular Genetic Analysis ◽  
Chromosome Polymorphism

Comparative landscape genetic analysis of three Pacific salmon species from subarctic North America

2010 ◽  
Vol 12 (1) ◽  
pp. 223-241 ◽  
Author(s):  
Jeffrey B. Olsen ◽  
Penelope A. Crane ◽  
Blair G. Flannery ◽  
Karen Dunmall ◽  
William D. Templin ◽  
...  
Keyword(s):  
North America ◽  
Genetic Analysis ◽  
Pacific Salmon ◽  
Landscape Genetic

scholarly journals Genetic analysis of the population structure of socially organized oystercatchers ( Haematopus ostralegus ) using microsatellites

1999 ◽  
Vol 8 (2) ◽  
pp. 181-187 ◽  
Author(s):  
R. VAN TREUREN ◽  
R. BIJLSMA ◽  
J. M. TINBERGEN ◽  
D. HEG ◽  
L. VAN DE ZANDE
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Haematopus Ostralegus

An ecological and genetic analysis of the population structure of Populus tremula L. in the Perm region

2013 ◽  
Vol 3 (5) ◽  
pp. 382-387
Author(s):  
T. N. Svetlakova ◽  
I. V. Boboshina ◽  
S. V. Boronnikova ◽  
Yu. S. Nechaeva
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Populus Tremula ◽  
Perm Region

Population structure and genetic analysis of narrow-clawed crayfish (Astacus leptodactylus) populations in Turkey

Genetica ◽  
2014 ◽  
Vol 142 (5) ◽  
pp. 381-395 ◽  
Author(s):  
Suleyman Akhan ◽  
Yusuf Bektas ◽  
Selcuk Berber ◽  
Gokhan Kalayci
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Astacus Leptodactylus

scholarly journals Population structure in the Neisseria , and the biological significance of fuzzy species

2011 ◽  
Vol 9 (71) ◽  
pp. 1208-1215 ◽  
Author(s):  
Jukka Corander ◽  
Thomas R. Connor ◽  
Clíona A. O'Dwyer ◽  
J. Simon Kroll ◽  
William P. Hanage
Keyword(s):  
Population Structure ◽  
Genetic Analysis ◽  
Population Genetic ◽  
Vaccine Development ◽  
Sequence Data ◽  
Genetic Material ◽  
Biological Significance ◽  
Population Genetic Analysis ◽  
Uniform Manner ◽  
Complex Forms

Phenotypic and genetic variation in bacteria can take bewilderingly complex forms even within a single genus. One of the most intriguing examples of this is the genus Neisseria , which comprises both pathogens and commensals colonizing a variety of body sites and host species, and causing a range of disease. Complex relatedness among both named species and previously identified lineages of Neisseria makes it challenging to study their evolution. Using the largest publicly available collection of bacterial sequence data in combination with a population genetic analysis and experiment, we probe the contribution of inter-species recombination to neisserial population structure, and specifically whether it is more common in some strains than others. We identify hybrid groups of strains containing sequences typical of more than one species. These groups of strains, typical of a fuzzy species, appear to have experienced elevated rates of inter-species recombination estimated by population genetic analysis and further supported by transformation experiments. In particular, strains of the pathogen Neisseria meningitidis in the fuzzy species boundary appear to follow a different lifestyle, which may have considerable biological implications concerning distribution of novel resistance elements and meningococcal vaccine development. Despite the strong evidence for negligible geographical barriers to gene flow within the population, exchange of genetic material still shows directionality among named species in a non-uniform manner.

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