2. A mutation called a point mutation. This is where one or more nucleotides in a sequence accidentally get copied to a different nucleotide. (Like a typo.)
Now you could argue that neither 1, nor 2 produce "new genetic information" (depending on what your definition of "new genetic information" actually *means*).
But what is not arguable is that if 1 happens followed by 2, then you have a new gene. Where once you had one gene, now you have two genes, with different properties ... new genetic information.
1 and 2 don't have to occur in the same individual. 1 can occur, and then be followed even *generations later* in a descendant, by 2.
But if a gene is copied, and then later in some descendant, one of those copies gets altered, then you have a new gene ... new genetic information.