Paternity Index

The Paternity Index (PI) is a number used in genetic testing to determine the likelihood that a man is the biological father of a child. It compares the genetic markers of the child, the alleged father, and the mother (if tested) to see how often the man's genetic traits match those of the child, compared to how often they match a random man from the same population. A higher PI indicates a stronger likelihood of paternity, while a lower PI suggests a weaker connection. It is a key component in resolving paternity disputes scientifically.