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Satellite DNA's comprise a constant fraction of the DNA of most organisms. Their most striking characteristic, and the one for which they are named, is that they differ sufficiently in the arrangement and composition of their nucleotides from the bulk of the DNA that they can be readily separated from it. Many are composed of hundreds of thousands or millions of copies of short, repeated sequences. Little is known about their function(s).
Dorothy M. Skinner (Thu,) studied this question.