aDuring interphase, eukaryotic chromosomes are uncondensed and looped, with the ends of the loops attached to the nuclear matrix(see chapter 1) 在相界面, eukaryotic染色体期间是uncondensed和使成环,与圈的末端附有核矩阵(看第1章) [translate] ...
The microlamellae appear conical and join to a meshwork of microfilaments at their apices. Further toward the polar regions the microfilaments join with microtubules that converge and terminate near the nuclear envelope. During metaphase-anaphase and anaphase the chromosomes are apparently moved by the...
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The stages G1, S, and G2 make up interphase, which accounts for the span between cell divisions. Which cell is an example of anaphase? For example, a human somatic cell has 46 chromosomes. During anaphase when the chromatids are separated and pulled to opposite poles, the cell momentarily...
remember that there are 92 chromatids because the original 46 chromosomes were duplicated during S phase of interphase). It is helpful to see this visualized (for visual simplicity, a 2n=8 arrangement of chromosomes will be demonstrated, rather than the 2n=46 arrangement of chromosomes in humans...
For instance, we and others recently discovered that interphase chromosomes are partitioned into megabase-sized topological domains and smaller sub-domains (also known as topologically associated domains or TADs)6,7,8,9. These TADs form the basis for higher-level structures referred to as the ‘A...
During interphase the Ag-NOR proteins are restricted to the fibrillar centres (F.C.) and/or to the dense fibrillar component (D.F.C.). During prophase the silver-staining components come into close contact with some chromosomes and are arranged with a typical polarity: chromosome, F.C. and...
Homologous chromosomes are a set of two chromosomes, each of which comes from a different parent (one from the mother and one from the father), but that contain the DNA sequences for the same genes. During meiosis, the homologous chromosomes line up with each other so that they c...
thescm3mutant35, we first suspected that the kinetochore protein Mis6 (CENP-I) may have the potential to deposit Cnp1 even without HJURP. The Mis18 complex and Scm3 localise to kinetochores during interphase but are dispersed during mitosis, whereas Mis6 remains throughout the cell cycle9,15...
In the fruit fly Drosophila melanogaster, some somatic tissues also show association of homologues [1,2]. In the budding yeast Saccharomyces cerevisiae, there is some evidence for homologue association during the interphase before meiotic division [3,4], and it has been argued that such ...