A number of forces can cause gene mutations, such as smoking, radiation, viruses, cancer-causing chemicals (carcinogens), obesity, hormones, chronic inflammation and a lack of exercise.
The total number of base pairs is equal to the number of nucleotides in one of the strands (each nucleotide consists of a base pair, a deoxyribose sugar, and a phosphate group).
I don't know if you're looking for an answer from someone on here, or for an assignment of some sort. In my opinion; If there is a history of something like a disease or cancer in the genes throughout the family, then yes I think it is perfectly fine. If it is being done for a reason other than to help someone in a way, it's not the best thing to do.
It should be 2, but I'm not exactly sure
