Why did the invention of pcr make dna fingerprinting possible

With the invention of the PCR technique , DNA profiling took huge strides forward in both discriminating power and the ability to recover information from very small or degraded starting samples.

The process of PCR mimics the biological process of DNA replication but confines it to specific DNA sequences of interest.

In PCR process , the DNA sample is denatured into separate individual polynucleotide strands through heating. Two oligonucleotide DNA primers are used to hybridise to two corresponding nearby sites on opposite DNA strands. Thus two new copies of the sequences of interest are generated.

Repeated denaturation , hybridisation and extension in this fashion produce an exponentially growing number of copies of the DNA of interest.

Quantitative PCR methods enable automated , precise and high - throughput measurements.

well we can't tell you because we cant see the time give a screen shot or something.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides