Which best describes the different modes of bacterial reproduction? .
a. in binary fission, the two new cells that are formed are susceptible to the same antibiotic..
b. in conjugation, bacterial dna is transferred from one bacterium to another by a replicating virus..
c. in transduction, the cells that are formed are susceptible to the same antibiotic..
d. in transformation, a special sex pilus is required to connect two bacterial cells.

In binary fission, the two new cells that are formed are susceptible to the same antibiotic best describes the different modes of bacterial reproduction because bacteria form identical copies of their types. This means that bacteria reproduce by binary fission which is asexual reproduction.

Hence one bacteria cuts in some parts and then its DNA replicates and segregates. Later the pieces which are cut are then able to produce more daughter offspring identical to parent bacteria. Prokaryotes like bacteria and single celled eukaryotes reproduce asexually by this method.

The correct answer is option A, In binary fission, the two new cells that are formed are susceptible to the same antibiotic.

Reason -

Most of the bacteria’s reproduce asexually though binary fission. The process is simple in which a bacterial cell is required to  grow to an extent where it can split into two cells. Before the binary fission, the genetic material within the cell must divide and segregate to reach the two opposite end. A clear understanding of the cell division of bacteria helps to produce novel antibiotics  or chemicals that specifically target and interfere with cell division in bacteria.

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