BIOLOGY
NUCLEIC ACIDS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The genetic code is redundant; what does it mean?
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Each amino acid can only associated with one specific codon.
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Each codon can be associated with several different amino acids.
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Most amino acids can be associated with more than one codon.
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All possible codons can be associated with at least one amino acid.
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Explanation:
Detailed explanation-1: -The genetic code is said to be redundant in that the same amino acid residue can be encoded by multiple, so-called synonymous, codons. If all properties of synonymous codons were entirely equivalent, one would expect that they would be equally distributed along protein coding sequences.
Detailed explanation-2: -Usually one codon codes for a single amino acid. But exceptionally, more than one codon may code for the same amino acid e.g. GAA and GAG both code for glutamic acid. This property is called redundancy or degeneracy.
Detailed explanation-3: -However, the genetic code is known to be redundant, meaning that multiple codons can prescribe the same amino acid.
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