The four bases of a DNA molecule are:
1. Adenine (A)
2. Thymine (T)
3. Cytosine (C)
4. Guanine (G)
These four bases are the building blocks of DNA. Adenine pairs with thymine (A-T) and cytosine pairs with guanine (C-G) in the DNA double helix structure. The sequence of these bases along the DNA strand carries genetic information that determines the traits and characteristics of an organism. Understanding these bases is crucial in comprehending how DNA stores and transmits genetic information from one generation to the next.