Two thirds of all Master graduates in biology continue their education with a PhD from ETH or another university. At ETH, there are two ways to apply for a PhD position: direct applications and applications for a graduate school.
16 doctoral programs covering various fields in the life sciences are coordinated under the umbrella of "Life Sciences Zurich Graduate School" together with the University of Zurich. Every year there are two application deadlines: July 1st and December 1st. Applicants who meet the required qualifications will be invited for interviews. Detailed information on each program can be found here: www.lifescience-graduateschool.ch
In addition to doctoral programs, there is another way to apply for a doctoral position at ETH: Persons interested in a particular area, can also apply directly to the heads of research groups. Often such positions are advertised on their websites, however even if no advertisement is posted, direct contact can be worthwhile. This page provides information about the different research areas which are covered by D-BIOL researchers. Here you will also find the contact information of the individual professors.