The tracer molecule anchors the RNA strands into CAS9. It can go to that viral DNA that is attacking you. The spacer binds perfectly with the viral DNA as it's getting injected in. So, next time a virus attacks this CAS9 protein plus the CRISPR RNA plus the tracer RNA together are the three things you need.
In this episode, Dr Matt and Dr Mike discuss how humans realised that bacteria could fight off viruses using sequences in their DNA called, CRISPR. Today, CRISPR technology is being used to cure cancer and investigate the cause of genetic disease.
For a video of Dr Mike teaching about CRISPR, click HERE!
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