To actually visualize the double-helical structure of DNA, researchers require special ... To see chromosomes in this way, scientists must first use a chemical process that attaches the ...

But James Watson and Francis Crick's claim was a valid one, for they had in fact discovered the structure of DNA, the chemical that encodes instructions for building and replicating almost all ...

Deoxyribonucleic acid (DNA) is the information-carrying molecule found in all living organisms. In most animal, plant and fungal cells DNA is stored in the nucleus coiled up in thread-like ...

Later, in 1960, the discovery that an RNA molecule and a DNA molecule could form a hybrid ... these RNAs all share the same basic single-stranded chemical structure with, in some cases, higher ...

(Getty Images) Two new landmark studies show how a seeming tangle of DNA is actually organized into a structure that ...

Sunburns and aging skin are obvious effects of exposure to harmful UV rays, tobacco smoke and other carcinogens. But the effects aren't just skin deep. Inside the body, DNA is literally being torn ...

This discovery, along with the identification of other nitrogenous bases, laid the foundation for our understanding of DNA and RNA structure. Cytosine can be synthesized chemically or isolated from ...

DNA repair proteins act like the body's editors, constantly finding and reversing damage to our genetic code. Researchers ...

The applied physicist explains how the structure of 52,000-year-old genes hint at the biology of an extinct animal ...