Q:

How do eubacteria reproduce?

A:

Eubacteria reproduce asexually through binary fusion. Binary fusion is a complete replication of the bacteria's genetic material that results in one parent cell dividing into two identical bacteria cells. It can occur rapidly at one split every 20 minutes, accounting for the amazing replicative ability of eubacteria.

At the start of binary fusion, the genetic material of a eubacteria cell is copied so that two sets of chromosomes are formed. These two copies of chromosomes move to separate nucleotide regions, and the plasma membrane begins to grow between the two copies. Once these copies double their original size, the plasma membrane pinches together, separating the original eubacteria cell into two daughter cells. These two daughter cells are independent of each other but can sometimes remain connected. This connection is what forms colonies in some species. Since the cells produced through binary fusion are genetically identical, they are easily destroyed with antibiotics. In order to counter this, eubacteria recombine through conjugation, transduction and transformation.

Bacteria are a type of eubacteria, and some possess the ability to go into a dormant stage called a "spore," in which they rest until threatening conditions pass. Spores are resistant to heat, severe dryness, radiation and toxic chemicals.


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