Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 6
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
A Method for chromosome location of new Autosomal recessive mutations of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) based on crosses with three strains bearing autosomal-Y translocations Neotropical Entomology
ZAPATER,MIGUEL C.; PEREZ-CAMARGO,GLADYS.
A method is proposed to locate any new autosomal and recessive mutation in the Mediterranean fruit fly, Ceratitis capitata (Wied.). A series of crosses searches for pseudo-linkage between sex and the mutation by employing three strains with Y-linked translocations, thereby indicating its chromosome location.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Mediterranean fruit fly; Y chromosome; Pseudo-linkage.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000100009
Imagem não selecionada

Imprime registro no formato completo
Cytogenetic and molecular analysis of the Pantaneiro cattle breed PAB
Issa,Érica Cunha; Jorge,Wilham; Sereno,José Robson Bezerra.
The objective of this work was to characterize Pantaneiro cattle genetically through its paternal ancestry by the morphology of the Y chromosome, whether submetacentric or acrocentric, as well as to identify the maternal ancestry through mitochondrial DNA. The karyotype and mitochondrial DNA of 12 bulls of Pantaneiro breed were analyzed. The Y chromosome was analyzed in lymphocyte metaphases and the mitochondrial DNA by diagnosing its haplotype (Bos taurus and Bos indicus). Among Pantaneiro animals analyzed three had a taurine (submetacentric) Y and nine had a zebuine (acrocentric) Y chromosome, suggesting breed contamination by Zebu cattle, once Pantaneiro is considered to be of European origin. The mitochondrial DNA was exclusively of taurine origin,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bos taurus taurus; Bos taurus indicus; Y chromosome; Mitochondrial DNA.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001100006
Imagem não selecionada

Imprime registro no formato completo
Mitochondrial and Y chromosome genetic diversity in the Portuguese Lidia bovine breed R. Bras. Zootec.
Correia,Pedro Bettencourt Cardoso; Baron,Erica Elias; Silva,Joaquim Fernando Moreira da; Gardyn,Óscar Cortés.
ABSTRACT A total of 80 samples were collected to analyze the mitochondrial DNA (mtDNA) and Y chromosome genetic diversity of two main Portuguese Lidia bovine populations and clarify their genetic relationships with Spanish Lidia lineages. A 521-bp D-loop fragment was sequenced in 40 animals belonging to four herds (three Brava dos Açores and one Casta Portuguesa) and the same number of samples were collected with equal distribution from males in order to genotype six microsatellites, one single nucleotide polymorphism, and one indel. The mtDNA diversity recorded was similar to that observed in Lidia cattle. Haplotype T3 was the most common (62.5%), followed by the African T1 haplotype (25%); very low frequencies were recorded for haplotypes T2 (2.5%) and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lidia cattle; Mitochondrial DNA; Portuguese lineages; Y chromosome.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000200099
Imagem não selecionada

Imprime registro no formato completo
Prevalence of Y chromosome deletions in a Brazilian population of nonobstructive azoospermic and severely oligozoospermic men BJMBR
SãoPedro,S.L.; Fraietta,R.; Spaine,D.; Porto,C.S.; Srougi,M.; Cedenho,A.P.; Avellar,M.C.W..
We determined the prevalence of Y chromosome deletions in a population of 60 Brazilian nonobstructive azoospermic and severely oligozoospermic men. PCR-based screening of microdeletions was performed on lymphocyte DNA for the presence of 14 sequence-tagged sites (STS) located in the azoospermic factor (AZF) on the Yq chromosome. All STS were amplified efficiently in samples from 12 fertile men tested, but failed to be amplified in samples from fertile women, indicating the specificity of PCR conditions for Yq screening. Overall, 4 of the 60 infertile patients tested (6.7%) exhibited deletion of the Y chromosome, 2 of them being severely oligozoospermic patients (P10 and P32) and 2 azoospermic men (patients P47 and P57). Patients P47 and P57 presented...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Y chromosome; Microdeletions; Severe oligozoospermia; Azoospermia; Male infertility; Azoospermia factor; AZF region.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000600015
Imagem não selecionada

Imprime registro no formato completo
Reproductive deficiency in bulls from synthetic breeds according to the type of crossbreed and the morphology of the Y chromosome Genet. Mol. Biol.
Horn,Marilise M.; Moraes,José C.F.; Jaume,Carlos M.; Edelweiss,Maria I.A.; Rosado,Adriano.
We used 550 Braford and 214 Brangus-Ibagé bulls to study the association between Y chromosome morphology and the evaluation of breeding-soundness, karyotyping and breeding records were used to assess Y chromosome morphology. In general, no direct association was detected between the individual type of Y chromosome and reproductive fitness as previously estimated through breeding soundness examination. The type of breeding strategy used to form the synthetic breeds was also analyzed. The Braford breed is about 3/8 Zebu (Bos taurus indicus) and 5/8 Hereford (Bos taurus taurus) but when the breeding strategy used 1/4 Zebu animals to produce Braford bulls which were 3/8 Zebu a greater percentage of the bulls had to be culled due to reproductive problems. Our...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bulls; Semen quality; Y chromosome; Synthetic breeds of cattle.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000200008
Imagem não selecionada

Imprime registro no formato completo
Y Chromosomal STR Polymorphism in Northern Chinese Populations Biol. Res.
ZHENG,LIHONG; SUN,HAIMING; WANG,JINGWEI; LI,SHILIN; BAI,JING; JIN,YAN; YU,YANG; CHEN,FENG; JIN,LI; FU,SONGBIN.
Y chromosomal STRs show sufficient variability among individduals in a population and a high degree of geographical differentiation, such that their polymorphic character makes them especially suited for population genetic studies. To investígate the polymorphism of a set of 17 Y-STR loci in northern China, we genotyped the 17 Y chromosomal STR loci in a population sample of 377 unrelated males from eight ethnic populations in northern China. We calculated the haplotype frequencies, Rst value and carried out the analysis of molecular variance (AMOVA). We then drew the multidimensional scaling analysis (MDS) plot and phylogenetic tree based on the Rst value. All populations showed a high level of haplotype diversity, with low inter-population variance as...
Tipo: Journal article Palavras-chave: China; Population; STR; Y chromosome.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000400011
Registros recuperados: 6
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional