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In sickle cell anaemia glutamic acid is replaced by valine. Which one of the following triplets codes for valine?
a. G G G
b. A A G
c. G A A
d. G U G
Answers (1)
The answer is the option (d) G U G
Explanation: At the sixth codon of the beta globin gene, single base substitution takes place from GAG to GUG. Due to this, in the globin protein, replacement of glutamic acid with valine is seen. Hence, GUG is the code for valine.
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