Which of the following is NOT a function of DNA?

DNA is primarily known for its roles in storing, transmitting, and directing the synthesis of genetic information essential for the development and functioning of living organisms.

Storing genetic information is one of DNA's primary functions, as it encodes the hereditary information that is passed down from parents to offspring. This genetic blueprint is critical for the growth and development of organisms.

Transmitting genetic information is another key function of DNA. It allows for the transfer of genetic material during reproduction, ensuring that the progeny inherits characteristics from their ancestors.

Directing protein synthesis is also a crucial role of DNA. Through the processes of transcription and translation, DNA sequences are converted into messenger RNA (mRNA), which is then used to assemble proteins. These proteins perform a vast array of functions within the cell and are essential for maintaining life.

Producing energy, on the other hand, is not a function of DNA. This task is primarily carried out by other cellular components, such as mitochondria, which convert nutrients into energy through processes like cellular respiration. Therefore, it is clear that the function of producing energy does not fall within the purview of DNA's roles.