Manipulating the arrangement of DNA that makes up a gene is called gene editing.

Here's a breakdown:

* Gene editing is a powerful technique that allows scientists to precisely alter the DNA sequence of a gene. This can involve:

* Adding new DNA sequences

* Deleting existing DNA sequences

* Replacing specific DNA sequences

* This manipulation of the gene's DNA sequence can change the function of the gene, potentially altering the traits or characteristics of an organism.

There are several different gene editing techniques, such as CRISPR-Cas9, TALENs, and ZFNs. Each technique has its own strengths and weaknesses, and the choice of technique depends on the specific application.