The use of IS6110 as a marker for molecular epidemiological studies is limited when a Mycobacterium tuberculosis isolate has five or fewer copies of IS6110. Restriction fragment length polymorphism analysis with a highly polymorphic GC-rich repetitive sequence located in the plasmid pTBN12 (PGRS RFLP) and spoligotyping (based on the polymorphism of the DR region) are two frequently used seconda...

Two approaches were used to correlate the Aedes aegypti genetic linkage map to the physical map. STS markers were developed for previously mapped RFLP-based genetic markers so that large genomic clones from cosmid libraries could be found and placed to the metaphase chromosome physical maps using standard FISH methods. Eight cosmids were identified that contained eight RFLP marker sequences, an...

background: plasmodium vivax malaria accounts for approximately 88% of malaria cases in iran. there is limited in­formation on genetic diversity of p. vivax in the country and a need to develop and apply an effective vaccine against the dis­ease is necessary. among many potential candidates, msp -3β gene is promising target. this study was designed and car­ried out to determine the variation of...

The genetic diversity of Schistosoma haematobium remains largely unstudied in comparison to that of Schistosoma mansoni. To characterize the extent of genetic diversity in S. haematobium among its definitive host (humans), we collected S. haematobium eggs from the urine of 73 infected schoolchildren at 5 primary schools in White Nile State, Sudan, and then performed a randomly amplified polymor...

Human erythrocyte membrane alpha and delta glycophorins (glycophorins A and B) carry the antigens for the M,N,S,s blood group system. Synthetic oligonucleotides spanning coding regions for M,N,S, and s epitopes were used to examine DNAs from 50 individuals selected at random and from individuals known to exhibit S(-)s(-)U- or S(-)s(-)U+ blood group phenotypes. We showed that M,N,S,s, blood grou...

The cercariae stages of Prosorhynchus crucibulum and Prosorhynchus aculeatus are morphologically indistinguishable. However, the differentiation of these two species is crucial to understand the transmission dynamics between these primary hosts (mussels) and the secondary hosts (fish). In this way, the objective of this study is to develop an accurate molecular identification tool to differenti...

by different approaches, which include the use of pedigrees and DNA fingerprinting. The COP measures the Knowledge of genetic diversity and relationships among breeding degree of genetic relatedness among genotypes based materials is essential to the improvement of crop species. Genetic similarity estimates among cultivars are helpful to select parental on pedigree information by estimating the...

The brown planthopper (BPH), Nilaparvata lugens Stål, is a serious insect pest of rice (Oryza saliva L.). We have determined the chromosomal location of a BPH resistance gene in rice using SSR and RFLP techniques. A rice line 'B14', derived from the wild rice Oryza latifolia, showed high resistance to BPH. For tagging the resistance gene in 'B14X', an F2 population and a recombinant inbred (RI)...

Source/description: PCR primers were designed based on the canine rod transducin alpha cDNA sequence (Genbank accession no. Z69597). A single nucleotide polymorphism (G/A) was found within the amplified sequence. A new primer was designed with a single nucleotide mismatch to create a Tth111I restriction site in the presence of the G allele (allele 2), but not the A allele (allele 1). The PCR pr...

conclusions this is the first research in comparing two genetic marker systems in p. variotti. we were prompted to explore polymorphisms utility in p. variotti with a look at using germplasm screening mapping of genome and strain improvement programs. results both systems discriminated 20 isolates of p. variotii successfully but were different in the amount of detectable polymorphism. using clu...