Answer the following question given this paragraph: 

Gene cloning is the process of isolating and making copies of a gene. This is useful for many purposes. For example, gene cloning might be used to isolate and make copies of a normal gene for gene therapy. Gene cloning involves four steps: isolation, ligation, transformation, and selection. You can watch an interactive animation about gene cloning at this link: http://www. teachersdomain. org/asset/biot09_int_geneclone/ .


Q: What is the process of isolating a specific gene and then making a copy of it for use in gene therapy?

 Choices:

- attribute cloning

- gene treatment

- gene copying

- gene cloning

A:
gene cloning
