Interspersed repeat DNA: repeat sequences are dispersed throughout the genome
Tandem repeat DNA: copies which lie adjacent to each other, either directly or inverted
How do interspersed repeated DNA sequences differ from tandemly repeated DNA sequences?
a. Interspersed repeated DNA is derived from transposable elements, but tandemly repeated DNA is not.
b. The repeats in tandemly repeated DNA are up to several kilo base pairs long, but the repeats in interspersed repeated DNA are up to 100 base pairs long.
c. Tandemly repeated DNA has been shown to disrupt genes and cause disease in humans but interspersed repeated DNA is never associated with human disease.
d. Open reading frames are usually found in tandemly repeated DNA, but not in interspersed repeated DNA.
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