I'm looking at a dataset which contains all exon information for chromosomes 3 and 4 (human). Some exons appear to be very long. We've been asked to explain why this is so and if these are really exons. Is there a biological reason why there would be exons that are much longer than we would expect or is this a product of the sequencing technology?
Thanks for any help.
Help explaining very long exons in a dataset.
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