HERE have been several recent studies of the relationship between the heterozygosity of plant material and the magnitude of some quantitative character, usually yield or stability over a range of environments (YERMANOS and ALLARD 1961; FINLAY 1963; ROWE and ANDREW 1964). In each of these studies, single crosses and their derivatives have been used as the experimental material so that estimation...

The whole genome resequencing was used to develop single nucleotide polymorphisms (SNP) markers for the yellow catfish (Tachysurus fulvidraco). A total of 46 SNP from 129 individuals were selected 5550676 genotyping which distributed on 26 chromosomes. Of SNPs analyzed, 35 conformed Hardy-Weinberg equilibrium. observed and expected heterozygosity these ranged 0.2519 0.771 0.265 0.5018, respecti...

the major histocompatibility complex (mhc) plays a central role in the control of disease resistance and immune response. extensive genetic diversity in mhc genes provides a valuable source for genetic improvement, via selection, in many domestic animals. exon 2 of the class ii mhc, termed ovar-drb1 in domestic sheep (ovis aries), has been suggested as important disease resistance and immune re...

Four cattle breeds (Gyr, Nellore, Guzerat and Holstein) were analyzed by amplification of genomic DNA using microsatellite loci to evaluate the genetic diversity within and among them. DNA samples of 18 animals from each breed were collected to access the genetic content of them. Allele frequencies were calculated and used to generate a Nei’s genetic distance matrix what was used to build a den...

For the present study, blood samples from 35 Murrah dam-progeny pairs and semen samples of their sires were collected. All six primers successfully amplified the genomic DNA from all the animals. The mean observed heterozygosity (Ho) within the population was found to be 0.5438 and it ranged from 0.375 (CSSM43) to 0.775 (CSSM61). Average expected Levene’s and Nei’s heterozygosity (Hep) were 0.6...

the crustacean paramysis intermedia is one of the most important zooplanktons which is used as food by aquatic animals in estuaries and marine environments. regarding the existence of this zooplankton stocks in the persian gulf and oman sea, knowledge on genetic structure of this species is necessary for conservation of its biological diversity and gene pool. in present study, genetic diversity...

Population genetic structure of stellate sturgeon (Acipenser stellatus) in 197 adult specimens from four fishery regions along the Iranian coastline of the southern Caspian Sea was investigated using microsatellite markers. Out of 15 microsatellite primers, 11 loci were produced, in which 10 of them were polymorphic and 1 was monomorph. Totally, 184 alleles were identified and on average 13.1 a...

The major histocompatibility complex (MHC) plays a central role in the control of disease resistance and immune response. Extensive genetic diversity in MHC genes provides a valuable source for genetic improvement, via selection, in many domestic animals. Exon 2 of the class II MHC, termed Ovar-DRB1 in domestic sheep (Ovis aries), has been suggested as important disease resistance and immune re...

The Uruguayan Creole cattle genetic reserve consists of a herd of about 600 animals (bulls, cows and calves) located in an indigenous habitat of 650 hectares. In a previous study, a random sample from this herd showed high heterozygosity and a Hardy-Weinberg equilibrium for markers of major genes related to milk production. To study its genetic diversity we genotyped a sample of bulls (N = 19 o...