We assess the degree of sequence divergence in the maternally inherited mitochondrial cytochrome c oxidase I (COI) and cytochrome b (CytB) genes between two sister species of field crickets, Gryllus rubens Scudder, 1902 and Gryllus texensis Cade and Otte, 2000. We analyzed 1460 base pairs from 10 individuals of each species; individuals were sampled from areas of both allopatry and sympatry. Ov...

background : cockroaches are of vital importance medically and hygienically. they are able to contaminate foods and act as vectors of pathogenic agents such as bacteria, protozoa, and parasites to human environment either mechanically or through their digestive system. cockroaches belong to the phylum arthropoda, class insecta, and order blattodea or blattaria. to date, over 4,500 cockroach spe...

a specific polymerase chain reaction (pcr) method was applied for identification of bovine (bos taurus), ovine (ovis aries) and caprine (capra hircus) pure and binary mixtures of raw and heat-processed meats. these meats are used in food industry products and/or for direct consumption of consumers. the mitochondrial dna was amplified as a template in a pcr reaction by use of specific primers re...

different species of gazelles are among the most endangered mammals on the asian steppes and occur in the central, southern and northwestern regions of iran. the previous conservation efforts in this region have been incomplete due to confusion about the phylogenetic relationship among various populations. so that, different conservation programs such as ex-situ breeding and transfer of captive...

Disorders of mitochondrial DNA (mtDNA) maintenance are clinically and genetically heterogeneous, embracing recessive mtDNA depletion syndromes affecting children and adult-onset multiple mtDNA deletion disorders. Here we show that mutation of MPV17 - a gene implicated in severe, infantile hepatocerebral mtDNA depletion disorders characterised by a loss of mtDNA copies - can also cause clonally-...

The informational content of the mitochondrial (mt) genome of yeasts is remarkably constant, although the size of the mtDNA and the overall organization of genes can vary among species belonging to the same genus (Clark-Walker, McArthur and Sriprakash 1983). A variability even between strains of the same species is observed in the internal organization of mosaic genes like the CYTb and LSU-rRNA...