Transposons are a class of “mobile genetic elements” that operate within the DNA of living organisms. For years, macroevolutionary proponents have claimed that their presence undoubtedly supports Darwinian evolution.

The vast majority of dog breeds have emerged only in the last several centuries as a result of artificial selection. As new breeds are regularly developed, the many potential varieties within the dog kind are revealed. One distinction among breeds is their unique coats. Recent genetics analysis found that a huge range of dog fur textures are specified almost entirely by just three genes.

New research has uncovered a tiny protein that, when it breaks down, leads to cancer. This useful protein attaches to DNA in certain places and serves as a marker or “fence post.” These fence posts keep certain zones of DNA accessible to the cell regulatory mechanisms that activate gene expression to produce other proteins.

Salmonella bacteria became a health threat relatively recently, when chicken eggs were infected by the migration of the bacteria from chickens’ digestive organs to their reproductive organs. Geneticists are working to characterize differences between the harmful and innocuous strains of Salmonella.