I just rang up GU and apparently your preference does matter very much, they prefer those students with dentistry as their 1st preference than others despite what your rank might be.
that's odd.I got a 99.5 (sydney school leaver), but didn't get an offer...it wasn't my first preference but according to QTAC the preference number shouldn't have mattered...
my friend did not do bio either. The only science she did was chemistry.I applied through both QTAC and UAC. Dent was also my 4th preference (or 3rd can't remember), and I was also an all rounder :S
Do you think not doing biology would have made a difference? I did chemistry.