The molecules used to cut genes from DNA in an organism are called restriction enzymes.

Here's why:

* Restriction enzymes are naturally occurring enzymes found in bacteria.

* They act like molecular scissors, specifically recognizing and cutting DNA at very specific sequences called restriction sites.

* This precise cutting allows scientists to isolate specific genes from a larger DNA molecule.

Let me know if you'd like to learn more about how restriction enzymes work or their applications in genetic engineering!