Monday 2 April 2018

genetics - What separates gene loci?


Introns are sections of noncoding DNA that separate exons within a gene locus. However, between different gene loci, I also would assume there to be noncoding regions of DNA. What are these regions called? (And if my assumption is wrong, then please correct me.)



Answer



These regions, if unannotated, are simply called intergenic regions.


Sometimes, if a large section of chromatin is regulated by an enhancer/silencer/locus control element, then there are boundary elements that demarcate this chromatin region and prevent the spread of the chromatin state to neighbouring regions.


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