It depends on what you meant by pathway:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Antimicrobial_resistance#Mechanisms" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Antimicrobial_resistance#Mecha...</a><p>The mechanism can be encoded on a plasmid, for example:<p><a href="http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC514751&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC514751&#x2F;</a><p>So in that case, a bacteria could import the mechanism wholesale from a resistant population.<p>(Plasmids are fragments of DNA that bacteria can swap back and forth, even across species)