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rRNA

State a funct...

Question

State a functional difference between the following codons: [2]
(a) AUG and UAA
(b) Specific and Degenerate

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Solution

(a) AUG acts as an initiator codon while UAA acts as a stop codon. [1 mark]

(b) In genetic code, specific means one codon codes for only one specific amino acid whereas degenerate means some amino acids are coded by more than one codon. [1 mark]

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Q. (a) How many codons code for amino acids and how many do not?
(b) Explain the following giving one example of each
(i) Unambiguous and specific codon
(ii) Degenerate codon
(iii) Universal codon
(iv) Initiator codon.

Q. Identify the correct match between the codons and coding functions.

Column I Column II

A. AUG 1. Phenylalanine

B. UAA 2. Methionine

C. UUU 3. Tryptophan

D. UGG 4. Termination

Q. Which of the following option shows correct matching of Column - I and Column - II.

Column - I	Column - II
(i) Degeneration codon	(a) AUG
(ii) Initiation codon	(b) UAG
(iii) Non - sense codons	(c) AGU
(iv) Anti codon (UCA)	(d) AGA

Q. Differentiate between :
Unambiguous and degenerate codons

Q. Identify the correct match between the codons and coding functions

\begin{matrix} C o l u m n I & C o l u m n I I A . A U G & 1. P h e n y l a l a n i n e B . U A A & 2. M e t h i o n i n e C . U U U & 3. T r y p t o p h a n D . U G G & 4. T e r m i n a t i o n \end{matrix}

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