Question

A new and effective antibiotic becomes widely used for a particular species of bacteria. After some time, an antibiotic–resistant strain of the bacteria becomes prevalent. Which mechanism explains this phenomenon?

A.

The bacteria undergoes genetic drift, leading to formation of a new gene pool and thus evolving a new characteristic.

B.

Although less common previously, the resistant strain becomes more prevalent due to natural selection.

C.

The bacteria undergoes genetic flow, thus creating a new gene pool and evolving into a new species.

Answer 1

Itss B.

Answer 2

OH look who it is i didnt even notice XD

Answer 3

XD sureeee

Answer 4

Not at allllllllllll XD

Answer 5

i got a few more if u want the stars?

Answer 6

wait what stars

Answer 7

best Responses

Answer 8

ohhh

Answer 9

sure i'll try