Question

DNA sample collected from an unidentified bacterial species (Y) contains \(13%\) adenine. The \(G{+}C\) content (in percentage) of Y is ________________.

Hint:

For dsDNA, \(A=T\) and \(G=C\); use \(A{+}T{+}G{+}C=100%\).

Answer 1

Correct Answer: 74

Step 1: In double-stranded DNA, \(%A=%T\). If \(%A=13\), then \(%T=13\).
Step 2: \(G{+}C = 100-(A{+}T)=100-(13+13)=74%\).