Related topics: genome

The first stages of DNA evolution

One fundamental question in the field of the Origin of Life is how the first molecules of DNA replicated and evolved on the primordial Earth, more than 4 billion years ago. Before the emergence of the first cells or any other ...

Researchers uncover genetic 'bridge' to leukemia progression

For cells to thrive, a complex network of three-dimensional structures assembles to read, copy and produce the genetic materials (DNA) needed for cellular function. Understanding how these structures form, and what happens ...

DNA design brings predictability to polymer gels

Scientists in Japan have made a tuneable, elastic and temperature-sensitive gel by using complementary DNA strands to connect star-shaped polymer molecules together. The gel, and the method used to develop it, could lead ...

Uncovering the mysteries of methylation in plants

Growing up is a complex process for multi-celled organisms—plants included. In the days or weeks it takes to go from a seed to a sprout to a full plant, plants express hundreds of genes in different places at different ...

Superselective colloid-surface binding visualized

Rather than one key and one strong lock, biology often uses tens or hundreds of weaker links to bind parts together, such as cell membranes. This allows for selectivity and also reversibility—the binding can also be undone. ...

Biosynthesis pathway of a new DNA nucleobase elucidated

DNA is composed of nucleobases represented by the letters A, T, G and C. They form the basis of the genetic code and are present in all living beings. But in a bacteriophage, another base, represented by the letter Z, exists. ...

Astronauts demonstrate CRISPR/Cas9 genome editing in space

Researchers have developed and successfully demonstrated a novel method for studying how cells repair damaged DNA in space. Sarah Stahl-Rommel of Genes in Space and colleagues present the new technique in the open-access ...

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