Biomolecules Question 50
50. A segment of DNA has 120 adenine and 120 cytosine bases. The total number of nucleotides present in the segment is
(a) 120
(b) 240
(c) 60
(d) 480
Show Answer
Answer : d
Hints & Solutions
(d) According to Chargaff’s rule, the amount of adenine is always equal to thymine and that of guanine equal to cytosine. Moreover, $A+G$ $=T+C$.
$120+120=120+120$
$240=240$
So there will be 480 nucleotides in all.
