Real-time PCR.

Research into the field of DNA has increased dramatically in the years since DNA profiling was first identified. Since then, techniques have been developed to identify individuals from DNA samples equivalent to a single cell. Development of these techniques meant that the ability to accurately quantitate the DNA in such samples was required to evolve at the same pace.

How long does it take a static speaking individual to contaminate the immediate environment?

Developments in forensic genetic profiling mean that only a very little DNA is required to generate an identifying profile. However, as this sensitivity increases so does the risk of contamination with non-offender DNA, potentially leading to the conviction of innocents, or release of the guilty. The work of Rutty et al.