Using cardboard cutouts representing the individual chemical components of the four bases and other nucleotide subunits, Watson and Crick shifted molecules around on their desktops, as though ...

With the news yesterday that J. Craig Venter Institute scientists had built the first bacterial genome from the raw chemical components of DNA, we saw a host of science writers step up to ...

Scientists had previously detected on these meteorites three of the five chemical components needed to form DNA, the molecule that carries genetic instructions in living organisms, ...

The components of DNA have now been confirmed to exist in extraterrestrial meteorites, researchers announced. ... a very rare type of meteorite with a different chemical composition.

Now, new research has revealed the asteroid contains many of the chemical building blocks of life, such as amino acids and components found in DNA, said Dr. Daniel P. Glavin, senior scientist for ...

One way cells can control the activities of their genes is by adding small chemical modifications to the DNA that determine which genes are turned on or off. Methyl groups are one of these ...

With the chemical components of DNA identified, the next step was determining its structure. This determination was critical to how the molecule divides or copies itself during cell division. The ...

Bennu contains minerals and thousands of organic molecules, including the chemical components that make up DNA.