Genetic relationships and spatial genetic structure among clonal stocks of Trypanosoma cruzi in Colombia
Article Abstract:
Genetic relationships and spatial genetic structure have been studied among 23 clonal stocks of Trypanosoma cruzi in Colombia analyzed for 13 isoenzyme loci. Strong spatial autocorrelation with classic regional patches structure was found. Absence of segregating genotypes and absence of Hardy-Weinberg equilibrium support existence of a clonal structure. Overrepresentation of some identical zymodemes in vast areas of varying environmental conditions was not found.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
A hierarchical analysis of the genetic structure of an aquatic insect Bungona (Baetidae: Ephemeroptera)
Article Abstract:
Genetic structure of an aquatic insect Bungona (Baetidae: Ephemeroptera), a stream mayfly, has been subjected to a hierarchical analysis. The largest difference was seen at the smallest spatial scale, or reaches within streams, for most sampling occasions. Findings support a patchy recruitment hypothesis.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2000
User Contributions:
Comment about this article or add new information about this topic:
Interspecific and geographic variation in the sequence of rDNA expansion segment D3 of Ixodes ticks (Acari: Ixodidiae)
Article Abstract:
Interspecific and geographic variation have been studied in the Ixodes tick (Acari: Ixodidiae) sequence of rDNA expansion segment D3. Species studied were from North America, Europe, Asia and Africa. Between the conserved core sequences and each side of D3 are 14 relatively nonconserved bases that correspond to a stem, H14, in the folded transcript. Also compared is intraspecific sequence variation to interspecific variation among these and two other accessible species, one of which is from Central America.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Genetic diversity and temporal variation in the cyanophage community infecting marine Synechococcus species in Rhode Island's coastal waters
- Abstracts: Spatial and temporal variations in chitinolytic gene expression and bacterial biomass production during chitin degradation
- Abstracts: Functional identification of the mouse circadian Clock gene by transgenic BAC rescue. Mop3 is an essential component of the master circadian pacemaker in mammals
- Abstracts: Axonal ephrin-as and odorant receptors: coordinate determination of the olfactory sensory map. Genetic ablation and restoration of the olfactory topographic map
- Abstracts: Reversal of intrinsic DNA bends in the IFN-beta gene enhancer by transcription factors and the architectural protein HMG I(Y)