Fact 1: Introns are regions that do not code for proteins.

Fact 2: Introns are removed by RNA splicing.

Given the two facts above, answer the question "how are regions that do not code for proteins removed?" with the following options: 
- layers of fat
 - RNA splicing
 - aqueous solution
 - by indirect light
 - permineralization
 - Dilution
 - scarce resources
 - adding heat


 

  RNA splicing       