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repetitive DNA
- Stretches of DNA that repeat themselves throughout a genome , either in tandem or interspersed along the genome. These stretches can comprise up to fifty percent or more of an organism's DNA . It can code for an end product, perhaps a certain enzyme that is needed in large numbers; it can have a structural function (such as a telomere ); or it can comprise sequences with no known function.
Example Sentences
Rather, they were investigating what role repetitive DNA sequences played in the evolution of plants with exceptionally large genomes.
Knowing ferns often have notably long stretches of repetitive DNA, the team turned to the fork fern for analysis.
Telomeres are regions of repetitive DNA sequences that protect the ends of chromosomes from becoming frayed or tangled.
By comparing DNA from affected and unaffected people from several Utah families, they found that in SCA4 patients, a section in a gene called ZFHX3 is much longer than it should be, containing an extra-long string of repetitive DNA.
The markers in question are telomeres, which are sections of repetitive DNA found at each end of a chromosome that serve to protect the ends of the chromosomes from damage.
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