Answer:
22% T, 30% A, 20% C, and 28% G
Explanation:
Two strands of double-stranded DNA molecules are held together by hydrogen bonds formed between the complementary bases. Adenine and thymine are bonded together by two hydrogen bonds. Similarly, cytosine and guanine form a base pair. Therefore, if one strand of a double helix DNA has 22% A, 30% T, 20% G, and 28% C, the other strand would have the following composition:
22% A: 22% T
30% T: 30% A
20% G: 20% C
28% C: 28% G
This is also called the Chargaff rule.
