نتایج جستجو برای: sex chromosome abnormality
تعداد نتایج: 456037 فیلتر نتایج به سال:
A new recurring chromosome abnormality was identified in 8 of 621 consecutive successfully karyotyped adults with de novo acute leukemia. These eight patients had trisomy 13 as the sole cytogenetic abnormality. On central morphologic review, five cases were classified as subtypes of acute myeloid leukemia, one as acute mixed lymphoid and myeloid leukemia, one as acute lymphoid leukemia, and one...
We report a case of Robertsonian translocation associated with azoospermia. The literature is reviewed, and testicular histology and hormone condition are discussed. Isoji Sasagawa, MD, Department of Urology, Saiseikai, Fukushima General Hospital, 4-15 Sakuragi-cho, Fukushima-shi, Fukushima 960 (Japan) Introduction It is well-known that sex chromosome abnormalities are related to male infertili...
Papaya (Carica papaya) is a trioecious plant species that has male, female and hermaphrodite flowers on different plants. The primitive sex chromosomes genetically determine the sex of the papaya. Although draft sequences of the papaya genome are already available, the genes for sex determination have not been identified, likely due to the complicated structure of its sex-chromosome sequences. ...
Meiotic behavior and pollen fertility were analysed in five Epimedium species: Epimedium chlorandrum, Epimedium acuminatum, Epimedium davidii, Epimedium ecalcaratum and Epimedium pubescens. Chromosome numbers for five species were 2n = 2x = 12. All examined species displayed stable meiotic process and high pollen fertility (>76.67%). Meiotic abnormality partially affected pollen fertility. At m...
Although SRY was first identified 10 years ago, we still know remarkably little about its mode of action or downstream target genes. Recently, potential protein partners have been identified and there has been considerable activity to understand the roles of WT1, SF-1, DAX-1 and SOX9 in gonadogenesis. The emerging picture is one of complex interactions, involving both positive and negative regu...
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