Q: The polymerase chain reaction is a way of making copies of what?


Read this paragraph and choose the correct option from the provided answers:

The polymerase chain reaction is a way of making copies of a gene. It uses high temperatures and an enzyme to make new DNA molecules. The process keeps cycling to make many copies of a gene.

 Choices:

- an enzyme

- a method

- a form

- a gene


A:
a gene