| g-band patterns of the siberian snow sheep (ovis nivicola) and their relationship to chromosomal evolution in sheep. | g-band patterns of the siberian snow sheep, ovis nivicola alleni, 2n=52, were compared with the patterns reported in 2n=54 wild asiatic mouflon and 2n=54 north american sheep and those in domestic sheep with 2n=54, 53, and 52. the three largest pairs of biarmed autosomes displayed indistinguishable, presumably homologous, g-banding patterns in all types of sheep. the banding and morphology of the fourth pair of biarmed autosomes in o.nivicola differed from those of the three translocation varian ... | 1977 | 908200 |
| chromosome number of severtzov's sheep (ovis ammon severtzovi): g-banded karyotype comparisons within ovis. | severtzov's sheep (ovis ammon severtzovi; nasonov 1914) has a 2n = 56 diploid chromosome number and a karyotype consisting of two pairs of biarmed and 25 pairs of acrocentric autosomes, a large acrocentric x, and a minute biarmed y. the g-banding patterns of the largest pair of biarmed chromosomes were identical to those of the largest biarmed chromosomes in all wild and domestic sheep of the genus ovis. the banding patterns of the second pair of biarmed chromosomes were identical to the third p ... | 1998 | 9656470 |
| [participation of structural gene markers and anonymous dna sequences in genetic differentiation in the species ovis aries l. and ovis nivicola borealis]. | genetic variability and genetic differentiation in two ovis species--domesticated (askanian sheep, sokilska and kulunda sheep) and wild (bighorn sheep) were analyzed using different types of molecular-genetic markers--genetic-biochemical (30 loci) and dna (issr-pcr) ones. high level of genetic variability was revealed. the average heterozygosity of biochemical markers loci was in range of 0.073-0.188. markers involved into process of genofond divergence of two closely related species were reveal ... | 2000 | 11391892 |
| phylogenomic study of the subfamily caprinae by cross-species chromosome painting with chinese muntjac paints. | chromosomal homologies have been established between the chinese muntjac (muntiacus reevesi, mre, 2n = 46) and five ovine species: wild goat (capra aegagrus, cae, 2n = 60), argali (ovis ammon, oam, 2n = 56), snow sheep (ovis nivicola, oni, 2n = 52), red goral (naemorhedus cranbrooki, ncr, 2n = 56) and sumatra serow (capricornis sumatraensis, csu, 2n = 48) by chromosome painting with a set of chromosome-specific probes of the chinese muntjac. in total, twenty-two chinese muntjac autosomal paintin ... | 2005 | 15973503 |
| phylogenetic analysis of snow sheep (ovis nivicola) and closely related taxa. | based on mitochondrial cytochrome b gene sequence analysis, the history of true sheep (ovis) began approximately 3.12 million years ago (mya). the evolution of ovis resulted in three generally accepted genetic groups: argaliforms, moufloniforms, and pachyceriforms. the pachyceriforms of the subgenus pachyceros comprise the thin-horn sheep ovis nivicola (snow sheep), ovis dalli (dall and stone sheep), and ovis canadensis (rocky mountain and desert bighorn). north america wild sheep (o. canadensis ... | 2006 | 16267166 |
| whole genome snp scanning of snow sheep (ovis nivicola). | this is the first report performing the whole genome snp scanning of snow sheep (ovis nivicola). samples of snow sheep (n = 18) collected in six different regions of the republic of sakha (yakutia) from 64° to 71° n. for snp genotyping, we applied ovine 50k snp beadchip (illumina, united states), designed for domestic sheep. the total number of genotyped snps (call rate 90%) was 47796 (88.1% of total snps), wherein 1006 snps were polymorphic (2.1%). principal component analysis (pca) showed the ... | 2016 | 27599514 |
| [comparative analysis of the effectiveness of str and snp markers for intraspecific and interspecific differentiation of the genus ovis]. | a comparative study of the informativeness of snp and str markers for interspecific and intraspecific differentiation of the two species of the genus ovis, snow sheep (o. nivicola) and domestic sheep (o. aries), was conducted. eleven str loci combined into two multiplex panels were examined. snp analysis was performed with the dna microarray ovinesnp50k beadchip featuring 54241 snps. the possibility of clear differentiation of the studied ovis species with both types of genetic markers was demon ... | 2016 | 27183797 |
| the complete mitochondrial genome sequence analysis of tibetan argali (ovis ammon hodgsoni): implications of tibetan argali and gansu argali as the same subspecies. | the genus ovis (bovidae, artiodactyla) includes six species, i.e. ovis ammon, ovis aries, ovis canadensis, ovis dalli, ovis nivicola and ovis vignei. based on morphology, geographical location, habitat, etc., the species o. ammon is divided into nine subspecies. the near threatened tibetan argali is distributed across the tibetan plateau and its peripheral mountains, and believed to be one of the o. ammon subspecies (o. a. hodgsoni). however, considering its morphological features and distributi ... | 2013 | 23542075 |
| genome-wide snp analysis unveils genetic structure and phylogeographic history of snow sheep (ovis nivicola) populations inhabiting the verkhoyansk mountains and momsky ridge (northeastern siberia). | insights into the genetic characteristics of a species provide important information for wildlife conservation programs. here, we used the ovinesnp50 beadchip developed for domestic sheep to examine population structure and evaluate genetic diversity of snow sheep (ovis nivicola) inhabiting verkhoyansk range and momsky ridge. a total of 1,121 polymorphic snps were used to test 80 specimens representing five populations, including four populations of the verkhoyansk mountain chain: kharaulakh rid ... | 2018 | 30250679 |
| historical introgression from wild relatives enhanced climatic adaptation and resistance to pneumonia in sheep. | how animals, particularly livestock, adapt to various climates and environments over short evolutionary time is of fundamental biological interest. further, understanding the genetic mechanisms of adaptation in indigenous livestock populations is important for designing appropriate breeding programs to cope with the impacts of changing climate. here we conducted a comprehensive genomic analysis of diversity, interspecies introgression and climate-mediated selective signatures in a global sample ... | 2020 | 32941615 |
| the first draft genome assembly of snow sheep (ovis nivicola). | the snow sheep, ovis nivicola, which is endemic to the mountain ranges of northeastern siberia, are well adapted to the harsh cold climatic conditions of their habitat. in this study, using long reads of nanopore sequencing technology, whole-genome sequencing, assembly, and gene annotation of a snow sheep were carried out. additionally, rna-seq reads from several tissues were also generated to supplement the gene prediction in snow sheep genome. the assembled genome was ∼2.62 gb in length and wa ... | 2020 | 32592471 |