Genetics. The two main types of hemophilia are caused by gene mutations that affect the levels of clotting factors in the blood. Mutation of the FVIII gene leads to hemophilia A, also called classic hemophilia, while a mutations in the FIX gene leads to hemophilia B, also called Christmas disease.
SAT and ACT Requirements. Each school has different requirements for standardized testing. Most schools require the SAT or ACT, and many also require SAT subject tests. You must take either the SAT or ACT to submit an application to Harvard.
What act score and GPA is required to get accepted into Harvard? Roughly 600 to 800 on each section of the SAT. http://www.admissions.college.harvard.edu/apply/faq.html#7