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Telomere Definition. Telomeres are short tandem repeats of nucleotides at the ends of chromosomes. Let's break this definition down a bit. Nucleotides are the building blocks of DNA, which is the carrier of genetic information.
A desmosome is a space that opens between two cells; intermediate filaments from each cytosol pass through the space to anchor the cells together. A tight junction is merely stitching that holds cells together, but it does not allow as much mechanical action as desmosomes do.