Degeneracy of codons means
**Core Concept**
Degeneracy of codons refers to the phenomenon where more than one codon sequence can encode the same amino acid. This is a fundamental concept in molecular biology, specifically in the field of genetics and protein synthesis.
**Why the Correct Answer is Right**
During protein synthesis, the genetic code is read in a sequence of three nucleotides, known as codons. However, due to the degeneracy of the genetic code, there are multiple codons that can encode the same amino acid. For example, the amino acid leucine can be encoded by six different codons (UUA, UUG, CUU, CUC, CUA, and CUG). This redundancy allows the genetic code to be flexible and adaptable to different organisms and environments. The degeneracy of codons is a result of the wobble hypothesis proposed by Francis Crick, which suggests that the third nucleotide in a codon can be slightly flexible in its pairing with the corresponding nucleotide in the tRNA.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately describe the degeneracy of codons. While it is true that some codons are more similar than others, this does not account for the multiple codons that can encode the same amino acid.
* **Option B:** This option is incorrect because it implies that the degeneracy of codons is a result of the genetic code being ambiguous. However, the degeneracy of codons is a deliberate feature of the genetic code that allows for flexibility and adaptability.
* **Option D:** This option is incorrect because it suggests that the degeneracy of codons is a result of errors in protein synthesis. However, the degeneracy of codons is a normal feature of the genetic code that allows for multiple codons to encode the same amino acid.
**Clinical Pearl / High-Yield Fact**
The degeneracy of codons is a key concept in understanding the genetic code and protein synthesis. It is essential to remember that multiple codons can encode the same amino acid, and this redundancy allows the genetic code to be flexible and adaptable to different organisms and environments.
**Correct Answer:** C.