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A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is:

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A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is:
a120
b240
c60
d480
✓ Correct answer: d) 480
ExplanationAccording to Chargaff's rules, the amount of adenine is always equal to that of thymine, and the amount of guanine is always equal to that of cytosine, i.e., (120) and , therefore, the total number of nucleotides would be .

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