All of the information needed to build and maintain an organism — whether it's a human, a dog, or a bacterial cell — is contained in its DNA. DNA molecules are composed of four nucleotides ...

DNA sequencing is a laboratory method used to determine the sequence of a DNA molecule. The method was ... a starting point for DNA synthesis on the strand of DNA to be sequenced.

Embodied in the sequence of base pairs, DNA carries information between generations of living things. Present ... one strand ...

DNA mutations are changes in the nucleotide sequence of the DNA molecule. Mutations can occur spontaneously due to errors during ... These mechanisms can detect and correct different types of DNA ...