An archaeon reads the same codon in two different ways, overturning a doctrine that has stood for 60 years. Living organisms ...

There are three domains of life: bacteria, archaea, and eukarya. Eukaryotic cells are more complex than bacteria, but there are single-celled eukaryotes, and those that don't fit into any other ...

Although interfaces mediating protein-protein interactions are thought to be under strong evolutionary constraints, binding of the chemotaxis histidine kinase CheA to its phosphorylation target CheY ...

Humans might not be walking on Earth today if not for the ancient fusing of two microscopic, single-celled organisms called prokaryotes, new research has found. By comparing proteins present in more ...

Students will compare the sequence of amino acids in a gene shared between humans and six other organisms and infer evolutionary relationships among the species. In the NOVA scienceNOW segment Bird ...

Marc Lajoie is working on a new type of genetically engineered life: organisms that read a new language of DNA. That is, they have the same letters in their DNA—A,C,G, and T—but they read and ...

Scientists announced Thursday that they have built a single-celled organism that has just 473 genes — likely close to the minimum number of genes necessary to sustain its life. The development, they ...

The genetic material of plants, animals and humans is well protected in the nucleus of each cell and stores all the information that forms an organism. For example, information about the size or color ...

Students will learn about how different organisms get energy in an ecosystem. In this lesson, students will learn about how different organisms get energy in an ecosystem and what happens when and ...

Inheritance is the passing of traits from parents to offspring. Our modern understanding of inheritance comes from a set of principles proposed by Austrian monk and researcher Gregor Mendel in 1865.

INVASION of the bloodstream by micro-organisms depends on a combination of inter-related circumstances, such as a mode or portal of entry, a susceptible host (reduced host resistance) or the presence ...