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Phylogenetic Trees From Amino Acid Sequences

Phylogenetic Trees From Amino Acid Sequences. Phylogenetic Trees. Show common ancestors Similar to a cladogram Horizontal distance between two species relates to the similarity between the two species, based on the measured character

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Phylogenetic Trees From Amino Acid Sequences

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  1. Phylogenetic Trees From Amino Acid Sequences

  2. Phylogenetic Trees • Show common ancestors • Similar to a cladogram • Horizontal distance between two species relates to the similarity between the two species, based on the measured character • Nesting branch structure determines evolutionary relationships according to common ancestry

  3. Example Phylogenetic Tree dolphin sheep seal flamingo rockcod Bluefin tuna

  4. In your Lab Book Title = Cytochrome C Protein Sequence Comparison Copy Down the table on the next slide

  5. Organisms for Cytochrome C amino acid sequence comparison

  6. Computer Molecular Phylogeny Lesson

  7. 2 Questions – Extended Warm-Up • Describe how different species develop different amino acid sequences • Why are there more amino acid differences between two distantly related species?

  8. Analyze a Phylogenetic Tree • In your group – look at the phylogenetic tree. • Search for patterns that are familiar to what you know about the animals. Can you label any groups? • Describe how related different animals are.

  9. Peer Review • Take your partner’s rough draft, and see if it contains similar analysis to what we just did… • Focus on the 4 guiding questions on the blue handout. • Has your partner MADE SENSE of the relationships in the Phylogenetic Tree?

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