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| 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 |
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| 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 |
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