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In response to various immune challenges, females show better survival than males; the X chromosome has an important role in this immunological advantage. X chromosome-linked diseases are usually restricted to males, who have only one copy of the X chromosome; however, females are more prone to...
As a consequence of its key role in male sex determination, the Y chromosome has unique genetic properties that lead to it carrying highly informative haplotypes that evolve largely through the simple accumulation of mutations. Advances in technology have allowed ~10 Mb of Y-chromosome DNA to be...
NCBI's MapViewer allows you to view and search the chromosome maps of a subset of the organisms found in Entrez Genome. Regions of interest can be found via a simple text query (e.g. approved gene symbol or marker name) or by BLAST analysis. The region is viewed vertically and the use...
in the Z chromosome. These sex chromosomes cannot be distinguished by conventional staining; they represent the first demonstration of sex chromosomes in fishes in an early stage of morphological differentiation. The W heterochromatin and the telomeric heterochromatin in the two autosomes 18 show a ...
Characterizing the link between small-scale chromatin structure and large-scale chromosome conformation is a prerequisite for understanding transcription. Yet, it remains poorly characterized. We present a simple biophysical model, where chromosomes are described in terms of folding of a chromatin sequence...
This striking localization symmetry between the X and Y chromosome sequences is discussed in terms of the extensive pairing of the X-Y chromosomes noted during meiosis. 展开 关键词: X chromosome Y chromosome Mus spretus mapping in situ hybridization X–Y sequences mouse ...
Their shape is explained by the presence of different structures such as simple sequence repeats (SSRs) or short tandem repeats (STRs). In order to investigate a possible relationship between promoters of genes located on different chromosomes, we have plotted the center of weight from 1200 ...
Livestock resource management through gender offspring preselection is an efficient tool in terms of genetic improvement and farm management and additional... ML Checa,S Dunner,J Ca?Ón - 《Theriogenology》 被引量: 62发表: 2002年 A rapid and simple method for sex identification by heteroduplex...
Sex chromosome evolution is thought to be tightly associated with the acquisition and maintenance of sexual dimorphisms. Plant sex chromosomes have evolved independently in many lineages1,2 and can provide a powerful comparative framework to study this.