نتایج جستجو برای: pericentric inversions
تعداد نتایج: 5238 فیلتر نتایج به سال:
In this research, observational data are analyzed to explain temperature and salinity inversions and double diffusion in the Oman Sea. The results of this paper show that intrusive structures extend over a depth of about 100-450 meters in the Oman Sea. Temperature and salinity inversions observed depth of 250 m in winter and summer in the Oman Sea. Steps thickness is about 10 to 20 meters. A wa...
Pericentric inversion of chromosome 4 can give rise to recombinant chromosomes by duplication or deletion of 4p. We report on a familial case of Wolf-Hirschhorn Syndrome characterized by GTG-banding karyotypes, FISH, and array CGH analysis, caused by a recombinant chromosome 4 with terminal 4p16.3 deletion and terminal 4q35.2 duplication. This is an aneusomy due to a recombination which occurre...
A case of de novo, apparently balanced, three way exchange by translocation plus a pericentric inversion is described. The karyotype is 46,XX,t(6;11)(p21;q21),t(11;21) (q21;p13),inv(6)(p21q11) and was ascertained through second trimester amniocentesis. The structural rearrangements appear balanced. The child was phenotypically normal at birth. Growth and motor development were normal until 30 m...
There is a growing appreciation that chromosome inversions affect rates of adaptation, speciation, and the evolution of sex chromosomes. Comparative genomic studies have identified many new paracentric inversion polymorphisms. Population models suggest that inversions can spread by reducing recombination between alleles that independently increase fitness, without epistasis or coadaptation. Are...
Loss of the Suv39h Histone Methyltransferases Impairs Mammalian Heterochromatin and Genome Stability
Histone H3 lysine 9 methylation has been proposed to provide a major "switch" for the functional organization of chromosomal subdomains. Here, we show that the murine Suv39h histone methyltransferases (HMTases) govern H3-K9 methylation at pericentric heterochromatin and induce a specialized histone methylation pattern that differs from the broad H3-K9 methylation present at other chromosomal re...
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