What bases are found within DNA?

The correct response identifies that DNA is composed of four specific nitrogenous bases: adenine, thymine, guanine, and cytosine. These bases serve as the fundamental building blocks of DNA and play a crucial role in encoding genetic information.

Adenine pairs with thymine through two hydrogen bonds, while guanine pairs with cytosine through three hydrogen bonds. This complementary base pairing is essential for the structure of the DNA double helix and contributes to the stability and replication processes of the genetic material.

Understanding the unique role of thymine is particularly important since it differentiates DNA from RNA; in RNA, adenine pairs with uracil instead of thymine. The presence of thymine in DNA is integral to its structural integrity and functionality in hereditary information transmission.

In summary, recognizing that adenine, thymine, guanine, and cytosine are the correct nitrogenous bases in DNA is essential for grasping the molecular basis of genetics.