How many of the following statements are correct regarding UTRs?
(a) Present only before the start codon
(b) Required for efficient translation process
(c) Translation begins from these sequences
An mRNA also has some additional sequences that are not translated and are referred as untranslated regions (UTR). The UTRs are present at both 5' -end (before start codon) and at 3' -end (after stop codon). They are required for efficient translation process.