How many base pairs in the gene are needed to code for the enzyme lysozyme, containing 129 amino acids, found in egg white?
A
3×129
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B
(3×129)+(3×2)=393 base pairs
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C
(3×129)+(3×3)=396 base pairs
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D
4×129
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Solution
The correct option is C(3×129)+(3×2)=393 base pairs Three base pairs code for one amino acid and two more triplets are
required for 'start' and 'stop' signals, or (3×129)+(3×2)=393 base pairs in the gene are needed to code for the enzyme lysozyme, containing 129 amino acids, found in egg white.