Final answer:
ZFNs (Zinc Finger Nucleases) are not a feature of the CRISPR technology, which instead utilizes Cas9, DSBs, cultured human cells, and lab-designed RNAs for genome editing.
Step-by-step explanation:
The feature that is NOT a part of the CRISPR (Clustered Regularly Interspaced Short Palindromic Repeats) technology is C: ZFNs (Zinc Finger Nucleases). CRISPR is a revolutionary gene editing tool that uses a Cas9 enzyme to create double-strand breaks (DSBs) in DNA, which are then repaired by the cell, allowing for precise genetic modifications. The system is guided by lab-designed RNAs that direct the Cas9 to the specific location in the genome that needs alteration. ZFNs, on the other hand, are an older gene-editing technology that also aims to create specific changes in the DNA, but they are not part of the CRISPR system. CRISPR is often used in cultured human cells for research and therapeutic applications.