Question

7. If you have a 100-base pair DNA molecule that contains 45 cytosines, how

many adenines are there?

Answer 1

5 adenines

Step-by-step explanation:

Cytosine pairs with Guanine, and Adenine pairs with Thymine. This means, that if there are 45 cytosines, there must be 45 guanines. So that's 90 base pairs down. That means that there are 10 left between adenine and thymine- so that means there are 5 adenines