PS A Statement of Purpose. This document should be a well-written, 1-2 page essay describing previous research experience (including your role in any projects), primary areas of interest, motives for a Ph.D. in Biological Sciences and reasons for considering the Department of Biological Sciences at Carnegie Mellon for graduate work. GPA Contact the credential evaluation service, WES. For international applicants, the admissions committee will not review an application without transcripts in English or a GPA that has not been calculated on a 4.0 scale. Fee International(non-US citizen)：$75 US Domestic(US citizen or permanent resident)November 15：Waived Domestic(US citizen or permanent resident)November 16 - December 1：$75 US RL Three online letters of recommendation. These letters should be from individuals who are in a position to evaluate your ability to successfully complete a Ph.D. in Biological Sciences; at least one letter should be from the college most recently attended. Transcript One official transcript from each college-level institution attended, whether or not a degree was conferred. International students must provide one copy of each transcript, officially translated into English. Contact the credential evaluation service, WES. For international applicants, the admissions committee will not review an application without transcripts in English and a GPA that has not been calculated on a 4.0 scale.