Natural Selection

Hello. It’s Mr. Andersen and welcome to Biology Essentials – video 1. This is on natural selection so I’ve included a picture here of Charles Darwin. Most people think that Charles Darwin is famous because he somehow invented evolution. That’s not totally accurate. Why Charles Darwin is famous is that he’s the first scientist that […]

Mutations – selection: the bacteria resist

Mutations – selection: the bacteria resist Aha, here’s our patient! The patient has received all known antibiotic treatments to no effect! In conclusion: either he is not ill, or we have a new strain of microbes! Hmm! Or this could even just be a case of resistance to antibiotics. Let me explain… When the body […]