In the scenario of bacterial reproduction through binary fission, each generation is a clone of the previous one, meaning that the DNA sequence remains largely unchanged.
- The original parent bacterium has 100% matching DNA with itself.
- The first generation after the parent cell (the first daughter cell) will also have approximately 100% matching DNA with the parent.
- Each subsequent generation continues to have nearly 100% genetic similarity due to the cloning process.
However, if we are specifically looking at the third generation in relation to the original parent cell, we have to consider the inheritance pattern and any potential mutation. In a simple binary fission without mutations, the third generation should also have nearly 100% matching DNA with the original parent cell.
The answer, therefore, would be 100%.