BIS 2C Postlab 1: Introduction to Phylogeny and Tree-Thinking (Graded A+)

Postlab 1: Introduction to Phylogeny and Tree-Thinking Directions: Complete the questions below by the start time of your next lab. Be precise in your answers and pay attention to your reasoning. Your postlab is worth 5 points total. Use the following data matrix to answer the questions below. Follow the conventions shown to you in lab this week to answer the questions. If you’re having trouble, be sure to watch the learning glass video on unrooted trees and parsimony. 1 2 3 4 5 6 Great White (GW) A A G C G A Tiger (T) A T G C C T Hammerhead (H) T T G G G T Chimaera (C) T T G G C G 1. (0.75 pts) Which character(s) in the data matrix are parsimony informative? Use the diagrams below to: 2. (0.75 pts) Draw the three possible unrooted trees for the four taxa in the data matrix. 3. (0.5 pts) Map each informative character, correctly showing the changes on each tree. 4. Circle the most parsimonious tree (0.25 pts) and