Final answer:
Pieces of DNA can be artificially combined through recombinant DNA technology. This involves isolating DNA from cells, cutting it at specific places using restriction enzymes, and combining fragments of DNA from different sources to form a new recombinant DNA. This technique is used to produce proteins of interest.
Step-by-step explanation:
Under specific conditions, pieces of DNA can be artificially combined through recombinant DNA technology. This involves isolating DNA from cells and cutting it at specific places using restriction enzymes. Fragments of DNA from different sources can then be combined into a new recombinant DNA. This technique allows for the production of proteins of interest, such as human insulin for treating diseases like diabetes.