Bio 204 Sp24 Pre-Activity 7 worksheet-3 - Tagged

Hypothesis 1 2 Treelength Minimum CI Most parsimonious Most accurate Step 1 . Complete the data matrix (determine characters and character states) using DNA sequence data ( Hint : there are 3 variable nucleotide sites, which are the characters). Step 2. Map all three characters onto the 2 hypotheses using two colors (like you did in Activity 6). Step 3. Calculate treelength, minimum number of changes, and CI, and then fill in the table on the right. Determine which hypothesis is the most parsimonious and accurate and place an “X” in the appropriate boxes. Step 4 . Map the locations of the taxa (e.g., Florida, Chile) on the most accurate phylogeny and use the mapping to infer the origin of the new fungal pathogen. Place an “X” in the table on the right. Step 5. Save the worksheet as a PDF and upload to Canvas. Name: ________________________. RED ID: ____________________. Pre-activity 7 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 ATTCCGGCCTGTATG ATTGCCGCCTGTATG ATTGCCGCCTGAATG ATTCCGGCCTGTATG ATTGCGGCCTGAATG Taxon B (Mexico) Taxon C (Chile) Taxon D (Morocco) Taxon E (Spain) Taxon A (Florida) position Hypothesis 1 Hypothesis 2 character 1 character 2 character 3 C A D E B C A D E B C A D E B C A E B D C A E B D C A E B D Characters & character states T a x o n A T a x o n B T a x o n C T a x o n D T a x o n E M ini m u m 2 1 Locations Most likely origin of new fungal pathogen (Taxon A) is… Mexico Chile Morocco Spain 4 New fungal pathogen