Robertsonian translocation in the house mouse: a tale of chromosomal speciation
نویسندگان
چکیده
منابع مشابه
The origin of a Robertsonian chromosomal translocation in house mice inferred from linked microsatellite markers.
The western European house mouse, Mus domesticus, includes many distinct Robertsonian (Rb) chromosomal races. Two competing hypotheses may explain the distribution of Rb translocations found in different populations: they may have arisen independently multiple times, or they may have arisen once and been spread through long-distance dispersal. We investigated the origin of the Rb 5.15 transloca...
متن کاملChromosomal segregation in spermatozoa of 14 Robertsonian translocation carriers.
Male carriers of Robertsonian (Rob) translocations can have fertility problems associated with low sperm counts and abnormal sperm morphology. In this study, spermatozoa from 14 Rob translocation carriers, seven der(13;14), two der(13;15), two der(14;15), two der(14;21) and one der(21;22), were tested by fluorescence in-situ hybridization (FISH) for the chromosomes involved, to study meiotic se...
متن کاملStaggered Chromosomal Hybrid Zones in the House Mouse: Relevance to Reticulate Evolution and Speciation
In the house mouse there are numerous chromosomal races distinguished by different combinations of metacentric chromosomes. These may come into contact with each other and with the ancestral all-acrocentric race, and form hybrid zones. The chromosomal clines that make up these hybrid zones may be coincident or separated from each other (staggered). Such staggered hybrid zones are interesting be...
متن کاملChromosomal rearrangements and evolution of recombination: comparison of chiasma distribution patterns in standard and robertsonian populations of the house mouse.
The effects of chromosomal rearrangements on recombination rates were tested by the analysis of chiasma distribution patterns in wild house mice. Males and females of two chromosomal races from Tunisia differing by nine pairs of Robertsonian (Rb) fusions (standard all-acrocentric, 2N = 40 and 2N = 22) were studied. A significant decrease in chiasma number (CN) was observed in Rb mice compared t...
متن کاملThe Survey of Double Robertsonian Translocation 13q; 14q in the Pedigree of 44; XX Woman: A Case Report
Robertsonian translocations (RBT) are associated with an increased risk of aneuploidy. Single RBT carriers are the most common balanced rearrangement among the carrier couples with the history of spontaneous abortion. However, double Robertsonian translocations (DRBT), in which two balanced RBT occur simultaneously, are an extremely rare condition. A 9-year-old mentally normal girl with mu...
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ژورنال
عنوان ژورنال: Istituto Lombardo - Accademia di Scienze e Lettere - Incontri di Studio
سال: 2015
ISSN: 2384-9878,2279-5251
DOI: 10.4081/incontri.2015.144