(in Britain) one of four yeomen of the guard who act as commanding officers in the absence of higher authority
any portion of an interrupted gene that is represented in the RNA product and is translated into protein
a polynucleotide sequence in a nucleic acid that codes information for protein synthesis and that is copied and spliced together with other such sequences to form messenger RNA compare intron
EXON, within a nucleic acid, a sequence which codes for protein synthesis [n]