Codon is made up ofa)Single nucleotideb)Four nucleotidesc)three nucleotidesd)two nucleotidesCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Read ncert

Answer

Codons are found in mRNA.A sequence of three nucleotides in messenger RNA makes a codon for an amino acid. A codon is a sequence of three adjacent nucleotides constituting the genetic code that determines the insertion of a specific amino acid in a polypeptide chain during protein synthesis or the signal to stop protein synthesis. A codon is defined by the initial nucleotide from which translation starts.

Answer

A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids.

Answer

There are 20 amino acids to include these min. 20 no. of possible codon require. if genetic code is singlet only 4 codon, if doublet only 16 codon is possible. if triplet then 64 codons are possible which is  large enough to cover 20 amino acids

Answer

Explanation:

Codon Composition:
- A codon is composed of three nucleotides.
- Each nucleotide in a codon represents a specific amino acid.
- The sequence of codons in a gene determines the order in which amino acids are joined together to form a protein.

Function of Codons:
- Codons serve as the genetic code that helps in translating the information stored in DNA into proteins.
- Each codon corresponds to a specific amino acid or a stop signal during protein synthesis.
- The start codon (AUG) initiates the translation process, while the stop codons (UAA, UAG, UGA) signal the end of translation.

Genetic Code:
- The genetic code is degenerate, meaning that some amino acids are coded for by multiple codons.
- There are a total of 64 possible codons (4 nucleotides in groups of 3), which code for the 20 standard amino acids found in proteins.
- Some codons also serve as start or stop signals, ensuring the accuracy of protein synthesis.
In conclusion, codons consist of three nucleotides that play a crucial role in translating the genetic information stored in DNA into proteins. Understanding the genetic code and the role of codons is essential in studying gene expression and protein synthesis.

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