A) introns
B) codons
C) exons
D) anticodons
Correct Answer: B
Solution :
The enzyme RNA polymerase synthesizes mRNA on DNA template. Most protein coding genes consists of coding sequences called exons interrupted by non-coding sequences called introns. The triplet codon within the exons and the order of exons themselves in the gene is colinear, with the amino acid sequence of the encoded polypeptide.
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