The lower extremity of the human body or the structure used by animals for locomotion, also refers to a unit of length.

A technique used to study protein-DNA interactions, where DNA binding sites are identified through specific markers.

An opening or hole in a bone or other structure, typically allowing for the passage of nerves or blood vessels.

The large opening at the base of the skull that allows the spinal cord to connect to the brain.

An organic compound used in molecular biology for denaturing nucleic acids in certain experiments.

A symbolic expression of the composition of a chemical compound, showing the elements involved and their proportions.

The sum of the atomic weights of the atoms in a chemical formula, often used to describe the molar mass of a compound.

A derivative of methionine that initiates protein synthesis in prokaryotes and mitochondria.

A mutation that results in a change from a normal or wild-type phenotype to a mutant phenotype.

The preserved remains or traces of ancient organisms, often found in rocks and providing insight into evolutionary history.