Should we be concerned?

The History...

In the 1950s two effective antibiotics changed the course of this deadly disease for what seemed like forever. A disease once responsible for thousands of deaths seemed to be gone forever...however recently a NEW strand of this deadly disease has developed and this strand isn't going down without a fight. As of right now the strand is resistant to antibiotics. But where did it come from?


The resistant bacteria has a single base change form cytosine to thymine and this is REPRODUCING and PASSING ON this mutation to its offspring.

Because of this mutation the antibiotic cannot bind to the RNA polymerase an prevent transcription.

Natural Selection Factors


So how is this Evolution?

The TB bacteria has evolved due to this one single mutation and more importantly the mutation is one that can be passed on to offspring!
Big image