Recombinant DNA clones carrying high-copy or low-copy sequences from Aspergillus nidulans and Neurospora crassa were used to identify restriction fragment length polymorphisms (RFLPs) diagnostic for members of the A. flavus group: A. flavus, A. parasiticus, and A. nomius. These fungi were resolved into three distinct categories when they were grouped according to RFLP patterns. Subgroups within...

Gene polymorphism refers to a variation in DNA sequence that occurs population with frequency of 1% or higher. Polymorphism may be single nucleotide (SNP) some repetitive sequences (length polymorphism). Several methods can used analyze polymorphism, included Polymerase Chain Reaction (PCR), sequencing from the conventional method more sophisticated such as Next Generation Sequencing (NGS), flu...

Restriction Fragment Length Polymorphism (RFLP) is a technique in which organisms may be differentiated by analysis of patterns derived from cleavage of their DNA. If two organisms differ in the distance between sites of cleavage of a particular restriction endonuclease, the length of the fragments produced will differ when the DNA is digested with a restriction enzyme. The similarity of the pa...

The examination of fungal chromosomes by pulsed-field gel electrophoresis has revealed that length polymorphism is widespread in both sexual and asexual species. This review summarizes characteristics of fungal chromosome-length polymorphism and possible mitotic and meiotic mechanisms of chromosome length change. Most fungal chromosome-length polymorphisms are currently uncharacterized with res...

background: reduced bioavailability of nitric oxide (no) and the t?786c polymorphism of endothelial nitric oxide synthase (enos) gene have been reported as risk factors for the development of coronary artery disease (cad) with conflicting results. we investigated the association of plasma no levels, t?786c genetic polymorphism, and gene expression levels of enos with cad risk in an iranian subp...

In Norway, paratuberculosis has been frequently diagnosed in goats, while cattle have been almost free of the infection. This difference in prevalence between goats and cattle has led to speculations about the existence of a Mycobacterium avium subsp. paratuberculosis (M. a. paratuberculosis) isolate that is non-pathogenic for cattle. There is little information available on genotypic variation...

A PCR-restriction fragment length polymorphism (RFLP) method was developed in order to screen a large number of strains for impaired adhesion to epithelial cells due to expression of truncated InlA. inlA polymorphism was analyzed by PCR-RFLP in order to correlate inlA PCR-RFLP profiles and production of truncated InlA. Thirty-seven Listeria monocytogenes strains isolated from various sources, i...

Quantitative Southern blotting and PCR/RFLP analysis were used to determine the number and ratio of long-wave-sensitive (L-) and mid-wave-sensitive (M-) opsin genes in 25 colour-normal caucasian males. The average observed ratio was 1:2.8 +/- 1.2 for Southern blot analysis and 1:3.0 +/- 1.7 for PCR/RFLP analysis. Thus, the two techniques yielded similar results for the ratio of L- to M-opsin ge...

A permanently high virulence was found in tachyzoites of T. gondii K24 after serial passage in mice (90 passages during 324 days). Virulence tests revealed that a single tachyzoite of the 50th passage represented LD100 for mice. Analysis of genotype of K24 isolate was done by PCR/RFLP with ROP1/Ddel, SAG1/Ddel, 850/Rsal and IGS/Rsal and by RFLP/DNA with TGR1E sequence and Pstl enzyme. K24 isola...