Question

Which of the following is not the characteristic feature of the genetic code?

Answer 1

Hint: The genetic code is a system of instructions which specifies the process of conversion of DNA's four-letter code into the amino acids' 20-letter code. This coding system serves as the basis for protein formation or protein synthesis.
Complete step-by-step solution:
The term 'genetic code' refers to the instructions given by a gene to a cell on how to produce a certain protein. Adenine (A), cytosine (C), guanine (G), and thymine (T) are the four nucleotide bases of DNA that are used in different ways by each gene's code to create three-letter 'codons' that describe which amino acid is required at each location within a protein.
The most important features or characteristics of genetic code are given below:
There is a universal genetic code. Every known living thing has an exact identical genetic code. This demonstrates the shared evolutionary history of all living things.
The genetic code is crystal clear. Every codon only specifies one amino acid (or start or stop).
The genetic code repeats itself. Most of these amino acids are encrypted by numerous codons.
Hence, option B is the correct answer.
Note:
The history of the genetic code relates to the hopes and dangers of biology and genetics throughout the 19th, 20th, and 21st centuries. For instance, Oswald Avery put an end to more than 80 years of fruitful conjecture in 1944 when he demonstrated that the genetic code or DNA in simple words, was in fact the carrier of hereditary information. However, despite how crucial DNA was to the so-called heroic era of molecular biology, which covered the generation of scientific advancement following World War II, but still the ground-breaking areas of science of genetics and genomics couldn’t evaluate definite answers in this field of study.