Will bacteria cells have DNA?
Yes. Bacteria are living organisms. All living organisms have DNA.
Even though the bacteria don't have any DNA but they can do replication process how can it possible?
Tree cells and plant cells are similar, and animal cells differ from the other three (tree, plant, and bacteria). Bacteria are characterized by having round DNA instead of linear DNA. Round DNA is a characteristic of prokaryotic cells and not eukaryotic cells. Thus, bacteria is not a eukaryote. (Note: there are many more differences between eukaryotic cells and prokaryotic cells such as size, organelles....)