Abstract:
:The chromosome makeup of a 3-year-old crossbred heifer was examined in an attempt to explore the cytogenetic causes of her infertility. The heifer proved to be a mosaic carrying predominantly XY cells and with approximately 30% of cells lacking a normal Y. The minor population included cells carrying a dicentric isochromosome Y and a small proportion of XO cells. Histological features of the gonads and reproductive system suggest that the presence of cells resulting from isochromosome formation and the consequent loss of the Y chromosome segment required for testicular induction may have been causally related to the embryonic state of the gonads and malformation of the duct system noted in this heifer.
journal_name
Genomejournal_title
Genomeauthors
Pinheiro LE,Mikich AB,Bechara GH,Almeida IL,Basrur PKdoi
10.1139/g90-104subject
Has Abstractpub_date
1990-10-01 00:00:00pages
690-5issue
5eissn
0831-2796issn
1480-3321journal_volume
33pub_type
杂志文章相关文献
GENOME文献大全abstract::Asexual lineages in the parasitoid wasp Lysiphlebus fabarum (Hymenoptera: Braconidae: Aphidiinae) have previously been shown to have occasionally undergone sexual reproduction and recombination with males from related sexual populations. In the present study, the cytogenetic system of asexual females in this species i...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g02-112
更新日期:2003-02-01 00:00:00
abstract::Insulin-like growth factor 1 (IGF1) regulates growth and metabolic functions in vertebrates. A dinucleotide repeat sequence located at the promoter region of the IGF1 gene has been reported in several vertebrate species and may affect the control of the transcriptional activity of this gene. The genotypes of animals f...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:1998-02-01 00:00:00
abstract::During 30 years of unprecedented urbanization, plant diversity in Shenzhen, a young megacity in southern China, has increased dramatically. Although strongly associated with plant diversity, butterfly diversity generally declines with urbanization, but this has not been investigated in Shenzhen. Considering the speed ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2015-0192
更新日期:2016-09-01 00:00:00
abstract::Mismatched heteroduplexes arise as intermediates of several dissimilar genetic processes. The outcome of these genetic events will therefore be influenced by the efficiency and specificity of mismatch repair. We have studied the correction of base-base mispairs in simian and human fibroblasts by transfecting the cells...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g89-107
更新日期:1989-01-01 00:00:00
abstract::DNA repeats, revealed initially by digestion of horse DNA with restriction enzymes, were cloned and characterized by cross-hybridization studies and nucleotide sequencing. The Sau-like family of tandem repeats contained two classes of repetitive elements with unit repeats of about 80 bp that shared no sequence similar...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-169
更新日期:1995-12-01 00:00:00
abstract::Genetic variation in Gir cattle (Bos indicus) has so far not been well characterized. In this study, we used whole genome sequencing of three Gir bulls and a pooled sample from another 11 bulls to identify polymorphisms and loci under selection. A total of 9 990 733 single nucleotide polymorphisms (SNPs) and 604 308 i...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2013-0082
更新日期:2013-10-01 00:00:00
abstract::Pigeon spermatocytes were processed with a drying-down technique and their synaptonemal complex (SC) complements were analyzed by electron microscopy. The synaptonemal complex karyotype of the macrobivalents shows an excellent correspondence with the mitotic karyotype. The number and distribution of recombination nodu...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g98-138
更新日期:1999-04-01 00:00:00
abstract::A Brassica campestris-alboglabra monosomic addition line (genome: AA + one chromosome from the C genome, 2n = 21) harbours the Brassica alboglabra (CC, 2n = 18) chromosome with the gene for erucic acid. In order to identify this chromosome, we have studied the mitotic prometaphase chromosomes of Brassica campestris (A...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-039
更新日期:1995-04-01 00:00:00
abstract::Microsatellites have many desirable marker properties and have been increasingly used in crop plants in genetic diversity studies. Here we report on the characterisation of microsatellite markers and on their use for the determination of genetic identities and the assessment of genetic variability among accessions fro...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-44-5-773
更新日期:2001-10-01 00:00:00
abstract::Forty apricot cultivars with different geographic origins belonging to the germplasm collections of St. Istvan University (Budapest, Hungary) and the Instituto Valenciano de Investigaciones Agrarias (IVIA) (Valencia, Spain) were studied by means of SSR markers. The aim of the study was to determine the genetic relatio...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g02-128
更新日期:2003-04-01 00:00:00
abstract::Eighteen low-copy and genomic microsatellite markers were tested for Mendelian inheritance and then assayed in 41 Pinus taeda L. samples drawn from five regions in the southern United States. The PCR products had multiple alleles, high levels of polymorphism, and little non-specific priming. Fifteen of the 18 markers ...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
abstract::Polyploidization is one of the major driving forces in plant evolution and is extremely relevant to speciation and diversity creation. Polyploidization leads to a myriad of genetic and epigenetic alterations that ultimately generate plants and species with increased genome plasticity. Polyploids are the result of the ...
journal_title:Genome
pub_type: 杂志文章,评审
doi:10.1139/G10-107
更新日期:2011-03-01 00:00:00
abstract::In pseudo-arrhenotokous mites, haploid males develop from fertilized eggs that undergo paternal genome loss (PGL) during early embryogenesis. We present evidence that some of the paternal genome may be retained in males of the predatory mite Typhlodromus pyri Scheuten (Acari: Phytoseiidae). Two reproductively compatib...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-110
更新日期:1995-10-01 00:00:00
abstract::Wide hybrids have been used in generating genetic maps of many plant species. In this study, genetic and physical mapping was performed on ph1b-induced recombinants of rye chromosome 2R in wheat (Triticum aestivum L.). All recombinants were single breakpoint translocations. Recombination 2RS-2BS was absent from the te...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g03-089
更新日期:2004-02-01 00:00:00
abstract::We examined the sequence of a 2214 base pair HindIII fragment from the mitochondrial genome of six rainbow trout. The fragment encodes four proteins and two tRNAs. Sequences for two fish from a single locality were identical. Those from separate localities differed by from 1 to 7 nucleotide substitutions. Of 13 variab...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g90-003
更新日期:1990-02-01 00:00:00
abstract::A model for the genetic structure of grape phylloxera populations in Europe was developed using hierarchical sampling techniques and AFLP-PCR (amplified fragment length polymorphism--polymerase chain reaction) methodology. One-hundred three European and 6 North American phylloxera populations were studied. An addition...
journal_title:Genome
pub_type: 杂志文章
doi:
更新日期:2000-08-01 00:00:00
abstract::The evolution of karyotypically stabilized short-lived (SL) and long-lived (LL) cytoraces in the laboratory have been established and validated through our previous lifespan studies. In the present investigation, we examined the possible reason(s) for the differential longevity among selected members of SL and LL cyto...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-049
更新日期:2011-10-01 00:00:00
abstract::Microsatellites or SSRs (single sequence repeats) have been used to construct and integrate genetic maps in crop species, including Phaseolus vulgaris. In the present study, 3 cDNA libraries generated by the Bean EST project (http://lgm.esalq.usp.br/BEST/), comprising a unigene collection of 3126 sequences and a genom...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g07-007
更新日期:2007-03-01 00:00:00
abstract::The 2C and 4C nuclear DNA amounts were estimated in eight diploid species, belonging to three diverse genera (Vicia, Tephrosia, and Phlox) and their corresponding colchitetraploids. In P. drummondii, T. purpurea, and T. oxygona tetraploids the deviation from the expectation was highly significant. The DNA in P. drummo...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g94-080
更新日期:1994-08-01 00:00:00
abstract::A F2 population of two celery cultivated types (Apium graveolens L. var. rapaceum and A. graveolens L. var. secalinum) was used to construct a linkage map consisting of 29 RFLP (restriction fragment length polymorphism), 100 RAPD (random amplified polymorphic DNA), four isozyme, one disease resistance, and one growth ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g95-005
更新日期:1995-02-01 00:00:00
abstract::Abstract: Comparative genomic hybridization (CGH) with a probe mixture of differently labeled genomic DNA from females and males highlighted the W chromosomes in mitotic plates and the W chromatin in polyploid interphase nuclei of the silkworm Bombyx mori, the flour moth Ephestia kuehniella, and the wax moth Galleria ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g03-003
更新日期:2003-04-01 00:00:00
abstract::A recent investigation, using a human genomic probe, has indicated that the 68,000 dalton neurofilament gene (NF68) is on the short arm of chromosome 8. We have used a murine cDNA probe on 65 metaphase spreads in situ to localize the human NF68 gene to 8p21 (20/370 grains; p less than 0.0001). In addition, we have fou...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g88-083
更新日期:1988-08-01 00:00:00
abstract::Both meiosis-specific and general recombination functions, recruited from the mitotic cell cycle, are required for elevated levels of recombination and for chromosome synapsis (assembly of the synaptonemal complex) during yeast meiosis. The meiosis-specific SPO11 gene (previously shown to be required for meiotic recom...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g89-017
更新日期:1989-01-01 00:00:00
abstract::European hazelnut (Corylus avellana L.) is the only economically important nut crop in the family Betulaceae. Because of its small genome size (~385 Mb / 1C), relatively short life cycle, availability of a dense linkage map, and amenability to transformation by Agrobacterium, the European hazelnut could serve as a mod...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g11-048
更新日期:2011-10-01 00:00:00
abstract::A DNA sequence, pOs6.20, was cloned from the nuclear genome of cultivated rice (Oryza sativa L.) by hybridization with a human minisatellite sequence. At high hybridization stringency, a subfragment of the rice sequence, pOs6.20.3, detected low-copy restriction fragment length polymorphisms (RFLPs), which behaved as M...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g93-061
更新日期:1993-06-01 00:00:00
abstract::Large sequence insertion (LSI) is one of the structural variations (SVs) that may cause phenotypic differences in plants. To identify the LSIs using medium-coverage sequencing data of four wild soybean (Glycine soja) genotypes, we designed a hybrid approach combining de novo assembly and read mapping. Total reads and ...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2018-0027
更新日期:2018-10-01 00:00:00
abstract::RNA-Seq methodology has been used to generate a comprehensive transcriptome sequence resource for perennial ryegrass, an important temperate pasture grass species. A total of 931 547 255 reads were obtained from libraries corresponding to 19 distinct tissue samples, including both vegetative and reproductive stages of...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2017-0077
更新日期:2017-12-01 00:00:00
abstract::Lasiodiplodia theobromae (Pat.) Griffon & Maubl., a member of the family Botryosphaeriaceae, is becoming a significant threat to crops and woody plants in many parts of the world, including the major cacao growing areas. While attempting to isolate Ceratobasidium theobromae, a causal agent of vascular streak dieback (...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/gen-2019-0112
更新日期:2020-01-01 00:00:00
abstract::The wheat-alien small segment translocation (SAST) lines carrying the beneficial genes from wild species are useful genetic stocks for wheat improvement. In this study, to introduce the grain hardness-related genes of Haynaldia villosa (L.) Schur. into common wheat (Triticum aesitivum L.), the mature female gametes of...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g2012-051
更新日期:2012-09-01 00:00:00
abstract::Alien cytoplasms cause a wide range of phenotypic alterations in the nucleus-cytoplasm (NC) hybrids in the Triticeae. Nuclear genomes of timopheevii wheat (Triticum timopheevii and Triticum araraticum) are fully compatible with the cytoplasm of Aegilops squarrosa, while those of a majority of emmer or durum wheat cult...
journal_title:Genome
pub_type: 杂志文章
doi:10.1139/g97-029
更新日期:1997-04-01 00:00:00