Wright's fixation index

Wright's fixation index, known as FST, is a measure used in population genetics to quantify how much genetic variation is distributed between different groups or populations. An FST value close to 0 suggests that populations are very similar genetically, indicating high gene flow or mixing. Conversely, a value near 1 implies populations are genetically distinct, with little exchange of genes. This metric helps scientists understand levels of differentiation, adaptation, and evolutionary processes shaping populations over time.