EVERYDAY SCIENCE

Detailed explanation-1: -Bacteria can become resistant to antibiotics through mutations that alter the cellular targets of antibiotics or by acquiring dedicated resistance genes from other bacteria. The acquisition of resistance is a very rare event; for example, resistance mutations usually occur in less than 1 in a million bacteria.

Detailed explanation-2: -Resistance to antimicrobial treatments, also known as AMR, evolves rapidly, often over the course of a single infection. It occurs either by bacteria exchanging with one another the genes that confer resistance, or by an individual bacterium becoming resistant through mutations in its own genes.

Detailed explanation-3: -Like bacteria, we humans can (and do!) develop resistance to harmful things in our environment. In fact, humans have become resistant to UV light from the sun, as you asked.

Detailed explanation-4: -Biological Mutations Since bacteria are extremely numerous, random mutation of bacterial DNA generates a wide variety of genetic changes. Through mutation and selection, bacteria can develop defense mechanisms against antibiotics.