d
Superbugs survive antibiotics by having a heritable adaptation. Over time, the repeated exposure of bacteria to antibiotics has put selective pressure on the population, causing the survival and proliferation of individuals with mutations or genetic traits that make them resistant to the antibiotics. This leads to the emergence of superbugs that are no longer susceptible to traditional antibiotic treatments. This process is an example of natural selection favoring individuals with advantageous traits in a changing environment.
In recent years, "SuperBugs" (bacteria causing human infections that are not treatable by regular antibiotics) are becoming more and more common. How could natural selection explain this?
a
There is no reliable data on the origin of super bugs.
b
We have always had the same amount of superbugs; modern media just discusses them more.
c
Antibiotics directly cause bacteria to become superbugs, which are an example of mutations leading to speciation of these superbugs.
d
Superbugs survive antibiotics by having a heritable adaptation.
1 answer