The fourth basic step in genetically modifying a cell is transformation, where the altered DNA is introduced into the target cells. This step follows the ligation process, which connects DNA fragments. Understanding these steps is essential for successful gene modification. ;
The fourth basic step in genetically modifying a cell is transformation, where the modified DNA is introduced into target cells. This follows the process of ligation where DNA fragments are connected. Therefore, the correct answer is transformation (option A).
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