Fig. 5From: Selective forces and mutational biases drive stop codon usage in the human genome: a comparison with sense codon usageUAA stop codon fraction versus GC-content of coding sequence. Black circles connected by lines indicate the UAA fractions in GC content categories of genomic CDSs. Single symbols indicate the average UAA fraction and GC content of highly transcribed genes (HTGs, grey square), ribosomal protein genes (RPGs, grey star), housekeeping genes (HKGs, grey diamond), HTGs without RPGs (grey triangle), and global genome (open circle). Values represent mean ± SEMBack to article page