The piece of genetic information removed from an mRNA strand after translation is called a(n)_________.

a) codon
b) anti-codon
c) termination codon
d) exon
e) intron

ok if it said transcription I know it would be the introns are removed, but what is removed after translation? Is it the termination codon (since all components come apart at the end)? Or is this a typo? I ask because I’ve found some mistakes in my math lessonbook (I’m doing correspondence). It takes ages to get an email back, so I thought I’d ask here first.