Background: Constitutional chromosome abnormalities are among the major contributors to the genetic causes of reproductive disorders. Despite all of worldwide efforts have been made so far, the prognosis for mosaic X chromosome aberration below 30% of unemployed has yet to be established. The purpose of this study was to assess the quantity and quiddity of chromosomal aberrations that may negat...

background: cytogenetic analysis, y-chromosome microdeletion screening, fish techniques and other genetic methods have helped in finding the causes of infertility in azoospermic or severe oligoazoospermic cases in the last decade. objective: in the present study, we characterized an abnormal y-chromosome, detected as a mosaic in an azoospermic male ascertained for infertility. materials and met...

The electrophoretic mobilities of the cytoplasmic ribosomal proteins of several species of plants were compared using two-dimensional electrophoresis. The total number of proteins as well as the number of acidic and basic proteins in individual species varied markedly. Of the species examined, Triticum aestivum had the highest number of basic cytoplasmic ribosomal proteins and Hordeum vulgare h...

chromosomal defects are relatively frequent in infertile men however, translocations between the y chromosome and autosomes are rare and less than 40 cases of y-autosome translocation have been reported. in particular, only three individuals has been described with a y;21 translocation, up to now. we report on an additional case of an infertile man in whom a y;21 translocation was associated wi...

Background: Lymphocytes of Fanconi anemia (FA) show an increased sensitivity to the alkylating agents such as mitomycin C (MMC), but their responses to gamma-irradiation is controversial. The extent of DNA damage in leukocytes of FA patients following irradiation and MMC treatment was studied at cellular and single chromosome level. Methods: DNA damage induced by gamma-rays and MMC was measure...

In the flora of Korea, Carex L. is one most species-rich genera. Among nearly 157 taxa, less than 30 have had their chromosome numbers reported. We report meiotic eight taxa from Korean populations, which include first count for C. accrescens Ohwi (n = 37II) and investigations populations three taxa: bostrychostigma Maxim. 22II), lanceolata Boott 36II), paxii Kük. 38II). species, counts observe...