Meiotic segregation and interchromosomal effects in a rare (1:2:10) complex chromosomal rearrangement
نویسندگان
چکیده
منابع مشابه
Analysis of Meiotic Segregation Patterns and Interchromosomal Effects in Sperm from 13 Robertsonian Translocations
The frequency of the Robertonian (ROB) translocation in newborn babies is approximately one in 1000. Robertsonian translocation is an unusual type of chromosome rearrangement caused by two particular chromosomes joining together. The aim of the study was to analyze the segregation of the ROB translocations in 13 male carriers, and to verify a possible inter-chromosomal effect (ICE) of the ROB t...
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One of the major causes of spontaneous abortion before the fourth month of pregnancy is chromosomal abnormalities. We report an unusual case of a familial balanced chromosomal translocation in a consanguineous couple who experienced 4 spontaneous abortions. Chromosomal studies were performed on the basis of G-banding technique at high resolution and revealed 46, XX, t (16 6) (p12 q26) and 46, X...
متن کاملComplex chromosomal rearrangements: origin and meiotic behavior.
BACKGROUND Complex chromosomal rearrangements (CCRs) describe structural rearrangements, essentially translocations, involving at least three breakpoints on two or more chromosomes. Although they are rare in humans, their clinical identification is important since CCR carriers can display various phenotypes which include phenotypically normal subjects, infertile males and patients with mental r...
متن کاملa rare de novo complex chromosomal rearrangement (ccr) involving four chromosomes in an oligo-asthenosperm infertile man
complex chromosomal rearrangements (ccrs) are rare events involving more than two chromosomes and over two breakpoints. they are usually associated with infertility or sub fertility in male carriers. here we report a novel case of a ccr in a 30-year-old oligoasthenosperm man with a history of varicocelectomy, normal testes size and normal endocrinology profile referred for chromosome analysis t...
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Successful sexual reproduction requires not only the production of haploid gametes, but also the fusion of these cells and reentry of the diploid zygote into the mitotic cell cycle. Coordination of the completion of meiosis and restart of mitosis necessitates modification of the cell cycle in ways that are poorly understood. In many organisms, the early mitotic divisions are also regulated to a...
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ژورنال
عنوان ژورنال: Journal of Assisted Reproduction and Genetics
سال: 2011
ISSN: 1058-0468,1573-7330
DOI: 10.1007/s10815-011-9655-0