If a dsDNA has 20% adenine, what would be its cytosine content?

Question

If a dsDNA has 20% adenine, what would be its cytosine content? (A) 20% (B) 30% (C) 40% (D) 80%

Tardigrade Admin · Accepted Answer

If dsDNA has 20% adenine, then according to the Chargaff s rule, it would have 20% thymine. The remaining 60% represents both G + C. Since guanine and cytosine are always present in equal numbers, the percentage of cytosine molecule is 30%.

Q. If a dsDNA has 20% adenine, what would be its cytosine content?

20%

30%

40%

80%

If dsDNA has 20% adenine, then according to the Chargaff s rule, it would have 20% thymine. The remaining 60% represents both G + C. Since guanine and cytosine are always present in equal numbers, the percentage of cytosine molecule is 30%.