A gene with 600 nucleotides will code for how many amino acids?
A
200
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B
600
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C
400
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D
900
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Solution
The correct option is A 200 As we know that set of three nucleotides constitute a codon. A combination of four nucleotides and 20 essential amino acids makes a genetic code for 64 different combinations (4 x 4 x 4). Here, a gene with 600 nucleotides will code for 600/3 = 200 amino acids, because a set of three nucleotides will make one codon, 200 codon = 200 amino acids.