A bottleneck in population size of a species is often correlated with a sharp reduction in genetic variation. The northern elephant seal (Mirounga angustirostris) has undergone at least one extreme bottleneck, having rebounded from 20-100 individuals a century ago to over 175,000 individuals today. The relative lack of molecular-genetic variation in contemporary populations has been documented,...

the oxidation of low-density lipoproteins and cell membrane lipids is believed to play an integral role in the development of fatty streak lesions, an initial step in coronary artery disease (cad). paraoxonase-1 (pon1) is an enzyme associated with the high-density lipoprotein (hdl) particle. pon1 protects ldl from oxidative modification by hydrolyzing lipid peroxides, suggestive of a role for p...

As we put 2017 behind us, I am dedicating this editorial to the celebration of Canada’s 150 birthday. I was fortunate to be in Ottawa for the month of August where I took in several Canada 150 events and displays, the most memorable and inspiring being MosaïCanada in Gatineau (created by the world famous Mosaïcultures internationales de Montréal http://english.mosaicanada.ca/). So impressed and...

the objective of the present study was to detect polymorphism in follicle stimulating hormone receptor (fshr) and beta subunit of follicle stimulating hormone (fshβ) genes and their relation to litter size and body weight trait in baluchi, iran black and arman sheep breeds. pcr-rflp technique using acci and hinfi enzyme treatments employed to detection of polymorphism in fshβ marker site but de...

Repeated spillovers of the H1N1 pandemic virus (H1N1pdm09) from humans to pigs resulted in substantial evolution of influenza A viruses infecting swine, contributing to the genetic and antigenic diversity of influenza A viruses (IAV) currently circulating in swine. The reassortment with endemic swine viruses and maintenance of some of the H1N1pdm09 internal genes resulted in the circulation of ...

The impact of renin-angiotensin system (RAS) gene polymorphism on the prognosis of IgA nephropathy (IgAN) is still debated. A longitudinal study of renal prognosis in patients with IgAN was conducted to search retrospectively for a genotype-phenotype association between RAS polymorphisms and end-stage renal failure (ESRF). A classification based on serum creatinine (S(cr)) and 24-h proteinuria ...

Choosing suitable varieties and manipulating plant population are crucial management aspects in any cropping system that goals to improve yield, quality the balance between demand environmental resource availability. A two-year field experiment was conducted at Tehran, Iran, a split plot design replicated thrice examine effect of planting density (low, moderate high) on ten cotton genotypes. In...

the objectives of this research were to study the varieties and relationships of yield and quality traits under two harvesting management procedures concerning forage dry matter (dm yield) and 5 quality traits such as dry matter digestibility (dmd%), water soluble carbohydrates (wsc%), crude protein (cp%), acid detergent fibre (adf%) and total ash in tall wheatgrass (agropyron elongatum). in th...