نتایج جستجو برای: chromosome type
تعداد نتایج: 1443937 فیلتر نتایج به سال:
The chromosomal spread and karyotype of Spirlin (Alburnoides bipunctatus) from Zabol region were identified using tissue squashing techniques with injection of 0.5ml/100g body weight of 0.01% Colchicines solution in fish fingerlings. Kidney and gill tissues were extracted and chopped in KCl 0.075M for 30 min and fixed in Carnoy solution in 3 stages. The chromosomal spreads were stained in 20% G...
During macronuclear development the Tetrahymena thermophila ribosomal RNA gene is excised from micronuclear chromosome 1 by site-specific cleavage at chromosome breakage sequence (Cbs) elements, rearranged into a 'palindromic' 21 kb minichromosome and extensively amplified. Gene amplification initiates from origins in the 5' non-transcribed spacer, and forks moving toward the center of the pali...
Three different models of MF1 strain mice were studied to measure the effects of gonadal secretions and sex chromosome type and number on body weight and composition, and on related metabolic variables such as glucose homeostasis, feeding, and activity. The 3 genetic models varied sex chromosome complement in different ways, as follows: 1) "four core genotypes" mice, comprising XX and XY gonada...
Toxoplasma gondii is a globally distributed protozoan parasite that can infect virtually all warm-blooded animals and humans. Despite the existence of a sexual phase in the life cycle, T. gondii has an unusual population structure dominated by three clonal lineages that predominate in North America and Europe, (Types I, II, and III). These lineages were founded by common ancestors approximately...
Results: The FISH results place DACH and Dach within well-characterized region of extensive homology between uman chromosome 13 and mouse chromosome 14 (Fig. 1). his region covers the distal portion of mouse chromosome 14 rom 41 to 70 cM (the telomere) and two-thirds of the long rm of human chromosome 13 from 13q14–q32 (data taken rom the human/mouse homology map, http://www.ncbi.nlmnih.gov/Hom...
Inherently dynamic, chromosomes adopt many different conformations in response to DNA metabolism. Models of chromosome organization in the yeast nucleus obtained from genome-wide chromosome conformation data or biophysical simulations provide important insights into the average behavior but fail to reveal features from dynamic or transient events that are only visible in a fraction of cells at ...
According to classical genetics, a recessive sex-linked or X-linked gene manifests its existence phenotypically only in the absence of its normal allele, that is, in the homozygous state or in the absence of a second X chromosome carrying the normal allele. The latter requirement is met, for instance, in males who have haemophilia as a sex-linked trait: they have only one X chromosome in their ...
The absence of all or part of one X chromosome in female humans causes Turner's syndrome (TS), providing a unique "knockout model" to investigate the role of the X chromosome in neuroanatomy and cognition. Previous studies have demonstrated TS-associated brain differences; however, it remains largely unknown 1) how the brain structures are affected by the type of X chromosome loss and 2) how X ...
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