According to [wikipedia][1] on chimeric genes:

> These mutations are distinct from fusion genes which merge whole gene
> sequences into a single reading frame and often retain their original
> functions.

I am not totally sure I understand the statement. My interpretation is that a fusion gene is caused by a translocation of DNA in a single gene; therefore, it "retains their original functions". This is different from a chimeric gene where DNA from two or more different genes are translocated to a new location to form a completely new gene.

Is my interpretation correct?



  [1]: https://en.wikipedia.org/wiki/Chimeric_gene