Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 68 for “"genetic distance"”.
-
The Genetic Consequences of Disjunction in Campanula Rotundifolia (Angiospermae: Campanulaceae)
… small, isolated populations will contain less genetic diversity and be genetically distinct from neighboring populations due to genetic drift. These predictions were tested for the flowering plant species Campanula rotundifolia by comparing three disjunct Missouri populations and eighteen …
-
Array-based genomic diversity measures portray Mus musculus phylogenetic and genealogical relationships, and detect genetic variation among C57Bl/6J mice and between tissues of the same mouse
… analysis of SNP differences to detect genetic distance across 362 Mus musculus samples. Genetic distance measured between distantly and closely related mice correlates with known phylogeny and genealogy. Variation detected between C57BL/6J mice is consistent with previous reports of …
-
Characterisation of HIV superinfection : genetic evolution and adaptive immune responses
… if the reason for superinfection was a greater genetic distance within epitopes of the superinfecting virus compared to those of circulating strains from the same cohort.
-
Resolving a Cryptic Species Complex: Application and Utility of Mitochondrial 16S and Nuclear Its1 Molecular Markers in Pyrgulopsis Micrococcus
… sequences to examine intra-and inter- population genetic variation in 13 populations of Pyrgulopsis micrococcus. Jennings (2001) concluded that at least five cryptic species existed in the P. micrococcus species complex. However, these conclusions were based on analysis of a single mitochondrial …
-
ΣΧΕΣΗ ΕΤΕΡΟΖΥΓΩΤΙΑΣ ΙΣΟΕΝΖΥΜΙΚΩΝ ΓΟΝΙΔΙΑΚΩΝ ΘΕΣΕΩΝ ΚΑΙ ΕΤΕΡΩΣΗΣ ΣΕ ΖΕΥΓΗ ΚΑΘΑΡΩΝ ΣΕΙΡΩΝ ΑΡΑΒΟΣΙΤΟΥ (ZEA MAYS L.) ΔΙΑΦΟΡΕΤΙΚΗΣ ΓΕΝΕΑΛΟΓΙΚΗΣ ΠΡΟΕΛΕΥΣΗΣ
… WAS THE STUDY OF THE RELATIONSHIP BETWEEN GENETIC DISTANCE OF INBRED LINES AND HETEROSIS OF THEIR SIMPLE HYBRIDS. FOR THIS PURPOSE SIXTEEN INBRED LINES OF DIFFERENT PEDIGREE AND THE SEVENTY FIVE SIMPLE HYBRIDS WHICH WERE DERIVED FROM CROSSES AMONG THEM WERE TESTED ON TRIALS IN TWO REGIONS. …
-
Genetic Relationships Of Wild Pigs (sus Scrofa) In The United States: Geographic Origins And Genotypic Distribution Of The Species With Implications For Management
… nucleotide polymorphisms, I identified multiple genetic groupings that corresponded to geographic distributions and known introduction histories. Through individual and population genetic distance analyses, I found that </p> <p>dispersal patterns and sources for invasions of wild pigs can be …
-
Determining Impediments to Gene Flow in a Natural Population of Cornus florida L. Cornaceae, Using Integrative Landscape Genetic Techniques
… florida L., by combining GIS and landscape genetic techniques (Least Cost Path Analysis, Circuit Theory, and Conditional Genetic Distance). Traditional population genetic analysis indicated pair-wise relatedness was significantly correlated to distance (Pearson; r = -0.312, P < 0.001) …
-
An Analysis of Gene Regulatory Evolution Within the Centrarchids
… correlation was detected between increasing genetic distance, D (Nei, 1978), between parental species (ranging from D = 0.133-0.974) and the developmental success of the hybrids at several levels: (1) hatching percentages, (2) temporal regulation of enzyme activity (15 loci), and (3) the …
-
Population structure, biochemical adaptation and systematics in temperate marine fishes of the genera Arripis and Chrysophrys (Pisces: Perciformes)
… to assess the amount and distribution of genetic variation in fishes of the temperate percoid genera Arripis and Chrysophrys. Available biological and life history data have been reviewed, and indicate that Arripis species are mobile, migratory, pelagic fishes, with planktonic larvae and a …
-
Population structure, biochemical adaptation and systematics in temperate marine fishes of the genera Arripis and Chrysophrys (Pisces: Perciformes)
… to assess the amount and distribution of genetic variation in fishes of the temperate percoid genera Arripis and Chrysophrys. Available biological and life history data have been reviewed, and indicate that Arripis species are mobile, migratory, pelagic fishes, with planktonic larvae and a …
-
Population Genetic Structure of Unionid Mussels Across Multiple Gulf Drainages
Understanding patterns of genetic differentiation within and across wildlife populations is a key component to parsing the demographic and ecological processes that govern the spatial structure and evolutionary trends of a given species. As molecular and computational techniques continue to …
-
Allozyme Diversity and Hybridization in Castanea Pumila (Section Balanocastanon, Fagaceae)
… of gene diversity (Ht=0.082). For this locus the genetic differentiation among populations (Fst=0.129) is slightly greater than average for species with similar life histories. A significant correlation between genetic distance and geographic distance (Rs=0.633, p=0.000), and the geographic …
-
Genetic diversity of midwestern oat germplasm
… segregates per trait and generalized genetic variance were calculated for each mating. Four measures of genetic distance between the parents were calculated: geneological distance, Euclidean distance based upon principal components, and the distance measures proposed by Hanson and …
-
Genetic diversity and relationships among Nguni cattle populations in three Southern African countries
… Thus, the aim of the current study was to genetically characterise South African (SA) Nguni, Mozambican Nguni (Landim) and Swazi Nguni populations across Southern African region using a panel of 25 microsatellite markers, recommended by FAO and ISAG for genetic diversity studies. Genotypic …
-
Three studies in marker-assisted plant breeding
… of marker-assisted plant breeding and plant genetics. First, we fine-map a recessive Mendelian mutation in maize which confers reduced leaf area, rdla, to a 153-Kb region on chromosome 4 with a mapping-by-sequencing approach. We find that the rdla mutation reduces total leaf area and per-leaf …
-
Genetic Variability, Pathogen Susceptibility, Subspecies Identity and Conservation of the Endangered Northern Flying Squirrel (Glaucomys sabrinus) in Virginia
I examined the population genetic structure of three known subspecies of Glaucomys sabrinus from Appalachia, Washington State, and two previously unexamined populations from Mount Rogers National Recreation Area (MRNRA) in Southwestern Virginia. Mean FST (0.107) and an AMOVA (P G. sabrinus …
-
Genetic Variation Among Geographically Disparate Yellow Perch Broodstock Populations
… and future marker assisted selection, genetic variation revealed by microsatellite DNA was evaluated in yellow perch, Perca flavescens, from four wild North American populations collected in 2003-2004 (Maine, ME; New York, NY; North Carolina, NC; and Pennsylvania, PA), and two captive …
-
Assessing the Phylogenetic and Cultural Content of Learned Song
… analysis of song databases coupled with genetic phylogenies, I have shown that there is indeed a significant correlation between genetic distance and song similarity in the oscines. For a subset of Emberizid species, it was possible to reconstruct a genus-level phylogeny using the song …
-
Genetic characterization of Theobroma cacao L Nicaraguan
Genetic composition of Theobroma cacao L., including 60 Nicaraguan farmers accessions, was investigated using nine microsatellite (SSR) markers. Fourteen breeders accessions from Experimental Center “El Recreo”, INTA, Nicaragua, two Criollos accession from CATIE, Costa Rica, and two accessions from …
-
Phylogeographic structure in the CFR genus Pauridia revealed by inter-simple sequence repeat amplification
… to granite outcrops on the West coast. Genetic structure correlated to geography has been described for the haploid chloroplast genome. Here the diploid nuclear genome is investigated using inter-simple sequence repeat amplification. Eleven populations were sampled from DNA collected for …
Page 1 of 4