Does the mutation CCR5-delta 32 increase the genetic info?
Whether or not a mutation changes the 'amount' (meaning the size of the genome) of genetic information present in an individual depends on the type of mutation and is independent on which gene is affected.

In general there are 3 types of mutations:


point mutation: this is the change of one base pair to another (e.g. A to C). The total amount of information/the size of the genome is unchanged.
deletion: this means that a certain stretch of DNA is missing, likely disrupting what was there before. The total amount of information/the size of the genome is reduced.
insertion: this means additional DNA was added at a certain place in the DNA and probably disrupts something that was there before. The total amount of information/the size of the genome is increased.


The CCR5-delta32 mutation is caused by the deletion of a few (only 32) base pairs, however this deletion causes a frame shift in the gene and therefore leads to an early stop codon, which renders the protein inactive.