This week?s Bio seminar Friday, Jan. 23, at 12:00 in DV2082 Sapna Sharma, York University A landscape perspective: The effects of climate change on aquatic ecosystems 1 Lecture 6: Phylogeny III Differentiating ancestral and derived character states Constructing character tables Drawing phylogenetic trees One more misconception 2 Do you support or oppose the following government policies? 3 http://www.washingtonpost.com/news/volokh-conspiracy/wp/2015/01/17/over-80-percent-of-americans-support-mandatory-labels-on-foods-containing-dna/ It?s all relative Are feathers a derived or an ancestral character when you compare? songbirds with ducks birds with reptilian ancestors A. Derived B. Ancestral 4 These terms are relative We want to determine the