Effects of GC content and mutational pressure on the lengths of exons and coding sequences.

Abstract excerpt

It has been hypothesized that the length of an exon tends to increase with the GC content because stop codons are AT-rich and should occur less frequently in GC-rich exons. This prediction assumes that mutation pressure plays a significant role in the occurrence and distribution of stop codons. However, the prediction is applicable not to all exons, but only to the last coding exon of a gene and to single-exon...

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