D the changes in amino acid sequence used to

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Unformatted text preview: proteins. D. The changes in amino acid sequence used to calculate molecular phylogenies do not cause changes in function. E. More than one of the above. Beaming in your answers 1. Figure out your answer and select the appropriate letter (A-E). 2. Turn on your iCliker by pressing the “ON/OFF” button; the blue “POWER” light should come on. If the red “LOW BATTERY” light comes on, you should replace your batteries soon. 3. Transmit your answer as follows: a. Press the button corresponding to the answer you’ve selected (A thru E). b. The “STATUS” light will flash green to indicate that your answer has been received. If the “STATUS” light flashed red, your answer was not received; you should resend it until you get a green “STATUS” light. Evolution 9 - 1 PFPPP E: PPLPF F: Evolution 9 - 2 D: PPLFP E: PPLFP IFPPP • Species D vs. Species E Species C • Reconstructing the history from the modern species (D, E, F): • Species E vs. Species F Species A2 Species A1 PPLPP Species B PPPPP PPPPP Species A PPPPP Original Protein: Long ago Species F PPLPF Species E PPLFP Species D IFPPP Now • Here is an example of molecular phylogeny; it uses the single-letter code for amino acids: P = proline F = phenylalanine L = leucine I = isoleucine • Consider the hydrophobic core of a protein where the exact sequence is not important for the function of the protein: Bio 112 Molecular Phylogeny Example Molecular Phylogeny Handout Comparision of amino acid sequences...
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