THE MOLECULAR BASIS OF INHERITANCE
GENE MUTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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pair of nucleic acid and sugar
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pair of phosphate and sugar
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three-base code
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two-base code
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Detailed explanation-1: -Each group of three bases in mRNA constitutes a codon, and each codon specifies a particular amino acid (hence, it is a triplet code).
Detailed explanation-2: -A three base sequence in DNA or RNA is known as a codon.
Detailed explanation-3: -The nucleotide sequence of the mRNA molecule is read in groups of three nucleotides. The three coding letters in mRNA are A, U, and G, where A-Adenine, U-Uracil, and G-Guanine.
Detailed explanation-4: -A triplet code is where each codon (within the code), consists of three, nonoverlapping, nuceoltides. The code is degenerate, as different triplet base pairs can code for the same amino acid. For example, AAA and AAG both code for lysine.
Detailed explanation-5: -A codon is the triplet of a set of bases (or nucleotides) in DNA that codes for an amino acid. The triple base complement for a codon is called an anticodon; By convention, triplets in mRNA are called codons, and triplets in tRNA are called anticodons. These codons are translated into protein sequences.