htm" style="color: #007fbf;">synonymous</a></span></u><span 
	 style="display: none;">RH_Synonymous_change</span>.&#160;&#160;However, 
 many genes display a non-random usage of synonymous codons for specific 
 amino acids.&#160;&#160;A measure of the extent of this non-randomness 
 is given by the Relative Synonymous Codon Usage (RSCU) (<u style="color: #007fbf;"><span 
	 style="color: #007fbf;"><a href="Sharp_et_al_1986.htm" style="color: #007fbf;">Sharp 
 et al. 1986</a></span></u><span style="display: n