Findings from a number of experiments on human chromatin have suggested that the DNA in our chromosomes is organized into loops of various lengths. Approximately how long is a typical loop (in nucleotide pairs of DNA)?

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The typical loop size is between 50,000 and 200,000 nucleotide pairs, although significantly longer loops may also exist. A DNA stretch of 2000 nucleotide pairs would have only about 10 nucleosomes. On the other hand, 10 million nucleotide pairs would be comparable to the size of a small chromosome arm.

Findings from a Number of Experiments on Human Chromatin Have