AP BIOLOGY

LABORATORY REVIEW

MOLECULAR BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
“One amino acid is encoded by one or more than one codons” Which property of the genetic code is best explained by this statement?
A
Degeneracy of code
B
Universal nature
C
Non overlapping
D
Unambiguous
Explanation: 

Detailed explanation-1: -The genetic code is degenerate which means that most amino acids are specified by more than one codon.

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: -Each codon codes for just one amino acid (or start or stop). What might happen if codons encoded more than one amino acid? The genetic code is redundant. Most amino acids are encoded by more than one codon.

Detailed explanation-4: -3. Degeneracy. The degeneracy of the genetic code refers to the fact that most amino acids are specified by more than one codon. The exceptions are methionine (AUG) and tryptophan (UGG). The degeneracy is found primarily the third position.

Detailed explanation-5: -Because most of the 20 amino acids are coded for by more than one codon, the code is called degenerate.

There is 1 question to complete.