Paternity disputes can most accurately be resolved through the use of

Step 1: Analyze the question The question asks which method is the most accurate for settling paternity disputes (deciding who a child's biological father is).

Step 2: The underlying concept A child inherits half of their DNA from the mother and half from the father. So if a man is the biological father, the child's DNA must contain segments that match his. DNA is unique to each person (except identical twins), which makes it a very reliable "genetic fingerprint."

Step 3: Evaluate each option

• A. Blood group typing: This can only exclude a man. For example, two parents with blood group O cannot have a child with group A. But many men share the same blood group, so it cannot positively confirm paternity. It has low accuracy.
• B. Finger printing: Fingerprints are unique to individuals, but they are not inherited in a simple, traceable way. Children's fingerprints do not match their parents', so this is not useful for paternity.
• C. Tongue rolling: This is a simple inherited trait, but it is very common and only has two forms (roller or non-roller). It is useless for identifying a specific father.
• D. DNA analysis: Comparing DNA profiles of the child, mother, and alleged father gives a match probability of over 99.9%. This is the most accurate method.

Step 4: Answer The correct option is D. DNA Analysis.

Exam tip: Remember "blood group excludes, DNA confirms." Whenever JAMB asks about paternity, crime-scene identification, or the most accurate identification of individuals, think DNA profiling (DNA fingerprinting). Do not confuse it with ordinary finger printing, which is a favorite trick option!