Which one of the following statement is not correct?
During protein synthesis,

UAA codon codes for lysine.

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UGG codon codes for tryptophan.

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Cysteine is coded by UGU and UGC codons.

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Tyrosine is coded by UAU and UAC.

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Solution

The correct option is A UAA codon codes for lysine.
The codon UAA is stop codon; statement A is incorrect. Lysine is encoded by AAA and AAG. The codon UGG codes for tryptophan; statement B is correct. The codons UGU and UGC code for cysteine; statement C is correct. The codons UAU and UAC code for tyrosine; statement D is correct.

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Similar questions

Select the incorrect statement(s).

1. Six codons do not code for any amino acid.

2. Codon is read in mRNA in a contiguous fashion.

3. Three codons function as stop codons.

4. The initiator codon AUG codes for methionine .

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