exists and is an alternate of . Not necessarily chromosomal mutations. Asbestos types are considered mutagens in lung cells, but any chromosomal mutation would have to be carefully engineered.
The average GPA at Princeton is 3.9. This makes Princeton Extremely Competitive for GPAs. (Most schools use a weighted GPA out of 4.0, though some report an unweighted GPA. With a GPA of 3.9, Princeton requires you to be at the top of your class.
At Harvard GPA only starts to help you when your GPA is 3.8 or higher. The average acceptance rate at Harvard is 12%, but it is 20% for applicants with a 3.8 or higher. I could not find any data published by Harvard on average GPA or GPA range. In my dataset, the average GPA of an applicant was 3.55, but the average GPA for someone who was accepted was 3.66.