Abstract
The length and interspersion of reiterated and single-copy DNA sequences in Dictyostelium have been examined. The results indicate that approximately 50–60% of the single-copy sequences in DNA fragments 1500 nucleotides long and 75% of the single-copy sequences in fragments 3000 nucleotides long are linked to short interspersed repeat DNA sequences. The average length of these single-copy sequences is 1500 nucleotides. The length of the reiterated DNA has also been analyzed and shows a bimodal distribution. One half is present in sequences greater than 2000 nucleotides long, while the remainder is present as short fragments 250–450 nucleotides long. These shorter fragments are interspersed with the bulk of the single-copy DNA.
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