Q. 17.101 - An Introduction to General, Organic, and Biological Chemistry

Question

 If the DNA double helix in salmon contains $28\%$ adenine, what is the percentage of thymine, guanine, and cytosine?

Step-by-Step Solution

Answer

$28\% \mathrm{T}, 22\% \mathrm{G}, 22\% \mathrm{C}$ are the percentage of thymine, guanine, and cytosine

Step 1 : Given information

We need to find the percentage of thymine, guanine, and cytosine . If the DNA double helix in salmon contains $28\%$ adenine,

Step 2 : Simplify

The percentage of thymine in DNA will be the same as that of adenine.
As a result, the percentage of thymine in salmon DNA is $28$ percent.
Because salmon DNA has $28\%$ adenine and $28\%$  thymine, the remaining $44\%$ will include exclusively guanine pairings with cytosine.
As a result, guanine and cytosine will have the same amount in salmon DNA, i.e. $22$ percent each.
Therefore, $28\% \mathrm{T}, 22\% \mathrm{G}, 22\% \mathrm{C}$ are the percentage of thymine, guanine, and cytosine