Final year BIOL units run for a period of 6 weeks as opposed to 12 weeks. This means that final year BIOL units are classed as either ‘early’ or ‘late’, depending upon whether they run in weeks 1-6 semester 1 (early), weeks 2-7 semester 2 (early) or weeks 7-12 (late) of each semester. The following unit descriptions have ‘(E)’ or ‘(L)’ following the unit title to denote whether their timetabling is ‘early’ or ‘late’ in the semester.