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The initator codon is...

The initator codon is

A

AUG

B

UAG

C

UAA

D

UGA

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Codons**: - A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid or a stop signal during protein synthesis. 2. **Identifying the Initiator Codon**: - The initiator codon is the first codon that is recognized by the ribosome during the translation process. It signals the start of protein synthesis. 3. **Common Initiator Codon**: - The most common initiator codon is **AUG**. This codon not only serves as a start signal but also codes for the amino acid **methionine**. 4. **Distinguishing Between Codons**: - Other codons such as UAG, UAA, and UGA are known as stop codons. These codons signal the termination of protein synthesis and do not code for any amino acids. 5. **Conclusion**: - Therefore, the initiator codon is **AUG**, and it is essential for the initiation of translation in protein synthesis. ### Final Answer: The initiator codon is **AUG**. ---
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Initiator codons

Consider the following statements and choose the correct option :- (a) Six codons do not code for any amino-acid. (b) Codon is read in m-RNA in a contiguous fashion. (c) Three codons function as stop codons. (d) In eukaryotes the initiator codon AUG codes for methionine.

The initiation codon in protein synthesis is

The initiating codon AUG specifies for

Name the initiation codon for protein synthesis. Name the amino acid it codes for.

Assertion : Untranslated regions are sequences of RNA before initiation codon and after termination codon. Reason : Untranslated regions provide stability to mRNA and also increase translational efficiency.

Assertion: Amber codon is a terminating codon. Reason: If in a mRNA, a termination codon is present, the protein synthesis stops abruptly whether the protein synthesis is complete or not.

Initiator codon in eukaryotes

The first codon discovered by Nirenberg and Matthei was :

Consider the following statements : Assertion (A) : Amber codon is a termination codon . Reason (R ) : If in a m-RNA, a termination codon is present, the protein synthesis stops abruptly whether the protein synthesis is complete or not. Now select you answer from code given below :