Back in 1952, Turing suggested that natural biological patterns like stripes or spots could form in the presence of two molecules: a slow-moving activator and a fast-moving inhibitor. The activator ...

These mysterious forms ... analyzed for unfamiliar patterns. Obelisks share some traits with viroids—infectious RNA loops known to affect plants—but exist in human-associated bacteria.

X Chromosome–Linked Dominant Single-Gene Diseases Few dominantly inherited forms of human disease are X chromosome ... exhibit a more complex inheritance pattern and are associated with ...