Atheism, by definition, is the lack of belief in any gods or supernatural beings. As such, atheists do not attribute the design of the universe or the DNA technology to any specific designer or intelligent entity. Instead, they typically ascribe the development and evolution of life's systems, including DNA, to natural processes such as biological evolution and natural selection.
According to the scientific consensus, DNA and the underlying genetic code are the result of natural processes that have occurred over billions of years. The theory of evolution provides an explanation for the diversity of life on Earth, including the development of complex biological systems. It proposes that through gradual changes and natural selection, life has evolved and diversified, including the emergence of DNA and its associated mechanisms.
Atheists generally view the complexity and functionality of DNA as the product of natural processes rather than the result of deliberate design by an intelligent being. They often point to scientific evidence, such as the fossil record, genetic research, and comparative anatomy, to support their position.
It's important to note that atheism is a broad term encompassing a range of beliefs and perspectives. Different atheists may have slightly different views on the origins and development of life, but in general, they do not attribute it to a supernatural designer.