Final answer:
In DNA, the percentage composition of adenine (A) is equal to the percentage composition of thymine (T), and the percentage composition of guanine (G) is equal to the percentage composition of cytosine (C). Therefore, if an organism has a G content of 17%, the A content will also be 17%.
Step-by-step explanation:
In DNA, percentage composition of adenine (A) is equal to the percentage composition of thymine (T), and the percentage composition of guanine (G) is equal to the percentage composition of cytosine (C). So, if an organism has a G content of 17%, we can conclude that the A content will also be 17%. This is because A and T always pair together, and G and C always pair together in DNA.
For example, if an organism has a DNA sequence with 17% G, then it will also have a DNA sequence with 17% C. Therefore, the percentage of A in this organism will be 17% as well.
Thus, the percentage for A in this organism is 17%.