Question

1. why is dna fingerprinting relied upon in criminal and paternity cases rather than blood typing? (be specific.)

Explanation:

DNA fingerprinting is more specific and unique to individuals. Each person (except identical twins) has a unique DNA profile, so it can accurately identify a suspect or determine paternity. Blood typing has limited specificity—many people share the same blood type (e.g., many have type O+), so it can only rule out or suggest a broad group, not uniquely identify an individual. DNA fingerprinting uses regions of DNA with high variability (like VNTRs or STRs) to create a unique pattern, making it far more reliable for precise identification in criminal and paternity cases.

Answer:

DNA fingerprinting is relied upon because each individual (except identical twins) has a unique DNA profile, allowing precise identification. Blood typing has low specificity (many share the same blood type), so it can’t uniquely identify a person. DNA uses variable DNA regions (e.g., STRs) for a unique pattern, ideal for criminal/paternity cases.