DNA – an introduction part 2
The video begins with something that may surprise some of you – forensic DNA typing is not about identifying genes!
Instead it is about inherited differences in the composition of non-coding DNA, in repetitive DNA sequences which consist of tandem repeats of nucleotide sequences. The areas of forensic interest are known as Short Tandem Repeats, or STRs, which are discussed in more detail.
This material is quite technical so it may be worth watching the video a number of times.
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