Compare the advantages and disadvantages of DNA fingerprinting compared with literal fingerprint

Compare the advantages and disadvantages of DNA...

Key Concepts

DNA Fingerprinting

DNA fingerprinting is a forensic technique that analyzes an individual's unique genetic markers, typically using methods such as Polymerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP). This technique provides a high level of specificity and can be used even when samples are degraded, making it a powerful tool for linking suspects to evidence. However, its effectiveness depends on proper sample collection, risk of contamination, higher costs, and longer processing times compared to some traditional methods.

Traditional Fingerprint Analysis

Traditional fingerprint analysis involves the examination of friction ridge patterns left at a crime scene. These patterns are unique to each individual and have been used as a reliable method of personal identification for decades. The advantages include rapid collection and comparison against established databases, as well as a long history of forensic validation. On the downside, quality and clarity of the prints can be affected by the surface or conditions at the crime scene, and smudged or partial prints may provide less conclusive evidence.

Transcript

00:01 Problem 37, we are discussing the advantages and disadvantages of using dna fingerprinting over the traditional fingerprinting.

00:12 So traditional fingerprinting, of course, is using actual fingerprints, and dna fingerprinting is analyzing your dna sequence.

00:27 So advantages, let's start with the advantages.

00:38 So advantages of using dna fingerprinting is that one, it requires a very small amount of sample.

00:51 Requires a small amount of sample, granted that it actually needs a lot of dna, but there's so much dna in a very small piece of maybe hair or...

01:11 Anything really that came from that person would contain a lot of dna regardless the actual amount is small.

01:22 Hopefully that made sense.

01:23 Okay so that's one advantage okay and second dna fingerprinting is very unique very unique and it's consistent.

01:42 What i mean by that is that dna does not change your dna would not change over time whereas fingerprint is found to change a little bit over time okay so that might pose difficulty in identifying let's say maybe in forensics that may make it difficult and advantages another advantage for dna is i don't know how to how to phrase this but traditional fingerprinting is very reliant on a clear print right so if they're lifting fingerprints from maybe a table it has to be a really clear fingerprint if it's smeared for some reason then we're not able to use that for identifying the individual so i guess i'll write it as does not depend on clear sample right, so if you have a drop of blood, it doesn't have to be fresh blood or it doesn't have to be, you know, a lot in the table...

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