DNA has ..................... instead of uracil.

Explanation

To answer the question "DNA has ..................... instead of uracil," we can follow these steps:

1. **Identify the Bases in DNA and RNA**: First, we need to understand the difference between the nitrogenous bases found in DNA and RNA. DNA contains four bases: adenine (A), thymine (T), cytosine (C), and guanine (G). On the other hand, RNA contains adenine (A), uracil (U), cytosine (C), and guanine (G).

2. **Recognize the Role of Uracil**: Uracil is one of the nitrogenous bases found in RNA. It plays a crucial role in the structure and function of RNA, particularly in protein synthesis and gene expression.

3. **Determine the Base that Replaces Uracil in DNA**: In DNA, uracil is replaced by thymine. Therefore, when the question asks what DNA has instead of uracil, the answer is thymine.

...