Chromosomes conformation capture methods are designed to identify Multiple Choice the mechanism of transposon movement. the length of DNA in a nucleosome. the location in the nucleus of chromosome territories. DNA regions that are close together in three-dimensional space.
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These techniques are primarily used to study the spatial organization of chromosomes within the nucleus. Show more…
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Select from these choices to answer questions 13 to 17: Electron microscopy showing beads on string. Gel electrophoresis showing bands of sizes that are multiples of 200 base pairs. Fluorescence in situ hybridization showing chromosomes at specific locations in the nucleus. DNA reconstitution experiments with purified chromatin and histones. X-Ray diffraction showing that chromatin contains repeating structural units not present in either DNA or proteins alone. 13. Evidence that DNA is packaged by histones into repeating units. 14. The first step of chromatin compaction is the formation of nucleosomes spaced at regular intervals. 15. Chromatin proteins organize DNA segments of defined and constant length. 16. The nucleosome core is formed by histones H2A-H2B and H3-H4 complexes. 17. Chromosomes occupy certain regions of the nucleus called chromosome territories.
Sri K.
The term euchromatin describes regions where DNA is loosely bound to nucleosomes, areas where the nucleosomes are more tightly compacted, and where DNA is inactive bundles of proteins in the middle region of a chromosome, cis-acting sequences. When a section of DNA is cut and the sequence is reversed, which of the following mutations results? Inversion, Frameshift, Insertion, Deletion, Translocation.
Adi S.
Molecular biologists can determine experimentally whether a region of DNA contains closed chromatin or open chromatin by assessing the sensitivity of the region to nucleosomes, RNA polymerase II, methyltransferase, DNAse, or histone deacetylase.
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