A "locus" is a term used in various fields, including mathematics and biology. In mathematics, it refers to a set of points that satisfy a particular condition or equation, often forming a geometric shape. For example, the locus of points equidistant from a single point forms a circle. In biology, "locus" describes the specific location of a gene on a chromosome. Each gene has a unique locus, which helps scientists understand genetic traits and inheritance patterns. This concept is crucial in genetics, as it aids in identifying how traits are passed from parents to offspring, influencing studies in genetics and evolution.