Earlier story this thread is demeaning: https://www.sciencenews.org/article/scientists-watch-bacteria-evolve-antibiotic-resistance
“Earlier story this thread is demeaning: https://www.sciencenews.org/article/scientists-watch-bacteria-evolve-antibiotic-resistance";
While interesting the design of the experiment is seriously flawed. The growth medium is a semisolid that is typically ~ 98% water and the antibiotics are water soluble. The antibiotic is free to diffuse in the water and the gradient will rapidly dissipate. In a few hours the antibiotic will be uniformly distributed in that medium.
I also found it interesting that they used the antibiotic Trimethoprim in the study. The lab I worked in during the 70’s was the first to identify and map the plasmid that conferred trimethoprim resistance.