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प्रश्न
Very Short Answer Question:
What is degeneracy of genetic code?
उत्तर
Usually, the single amino acid is encoded by a single codon. However, some amino acids are encoded by more than one codon. e.g. Cysteine has two codons, while isoleucine has three codons. This is called the degeneracy of the code. Degeneracy of the code is explained by the Wobble hypothesis. Here, the first two bases in different codons are identical but the third one varies.
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संबंधित प्रश्न
Draw a neat and labelled diagram of transcription and processing of hn-RNA
Which of the following is the function of a nonsense codon?
Identify the strand of DNA which acts as a template during transcription.
Identify the property of genetic code represented by the following case:
Each codon codes for a particular amino acid.
____________ refers to removal of introns and joining the exons in a defined order in a transcription unit.
Identify the CORRECT statements.
- Conversion of hnRNA to mRNA - Processing
- Removal of introns and joining of exons - Splicing
- Methyl adenosine triphosphate is added to 5'-end of hnRNA- Capping
- Addition of adenylate residues to 5' end in a template-dependent manner - Tailing
Which one ofthe following shows clover leaf model?
A functional unit of gene, which specific the synthesis of one polypeptide is known as:
Protein synthesis occurs in ______.
Given below is a stretch of DNA showing the coding strand of a structural gene of a transcription unit?
5’-ATG ACC GTA TTT TCT GTA GTG CCC GTA CTT CAG GCA TAA-3’
- Write the corresponding template strand and the mRNA strand that will be transcribed, along with its polarity.
- If GUA of the transcribed mRNA is an intron, depict the sequence involved in the formation of mRNA/the mature processed hnRNA strand.
i. In a bacterium
ii. In humans - Upon translation, how many amino acids will the resulting polypeptide have? Justify.
