This image illustrates the chemical structures of the five main nucleobases found in DNA and RNA. The pyrimidines, thymine (DNA), uracil (RNA), and cytosine are shown on top while the purines, adenine ...

Comparison of a single-stranded RNA and a double-stranded DNA with their corresponding nucleobases (Image: Wikimedia Commons, CC SA 3.0) Transfer RNA (tRNA) molecules are responsible for delivering ...

All five nucleobases that make up DNA and RNA have now been detected in meteorite samples, according to a study published yesterday (April 26) in Nature Communications. The work used recently ...

NASA's asteroid samples from Bennu hold not only building blocks for life, including amino acids and all five DNA and RNA nucleobases, but also the salty remains of an ancient water world ...

Ciesla and Sanford say this process could have generated organic molecules such as amino acids, amphiphiles and nucleobases—the building blocks of proteins, cell membranes and RNA and DNA ...