Project The goals of this project are to: 1. build a phylogeny, so you know how theyâ€™re made, 2. interpret the output, so you know the constraints of phylogeny building, and 3. use the phylogeny to tell a story about life on Earth. The goal is NOT to resolve a current mystery in phylogenetics or systematics. For this project, youâ€™ll choose creatures, gather relevant data from a genetic database, use the data to infer a phylogeny, display/interpret your raw phylogeny, and use it to tell a story. choose creatures By the end of this project, youâ€™ll construct a phylogeny that gives the relationships between three groups of creatures. (Eg, a â€œgroupâ€ could be octopuses, or cherry trees, or earthworms.) Each group will be represented by 1-3 taxa, with at least 7 total taxa. (If you choose to add an outgroup, thatâ€™s #8.) In the intro, youâ€™ll compare the biology of these three groupsâ€”anything you find interesting to compare and contrast. Later, when youâ€™ve created a phylogeny, youâ€™ll use the phylogeny to tell any story you find interesting about the creatures. gather data from genetic database Dr. Jon Herron (another Bio354 instructor) made a video showing how to gather genetic data. Watch the video here: http://evound.com/video-explainers/make-your-own-p… Youâ€™ll have to decide what gene(s) and taxa are relevant for your project. use the data to infer a phylogeny This is also discussed in the video linked above. Youâ€™ll use a server called phylogeny.fr. Their logoâ€”a phylogeny emerging from a magic lampâ€”seems appropriate, since we wonâ€™t discuss their exact phylogeny-building algorithm. (The concepts are covered in the pre-project.) display/interpret your raw phylogeny Phylogeny.fr will output a phylogeny with branch lengths indicating genetic distance, and node numbers indicating bootstrap values (or similar) for the putative monophylies defined by each node. Youâ€™ll display this â€œrawâ€ phylogeny, and interpret it in your own words. tell a story When you get â€œrawâ€ data from an experiment, you can display it many different ways, depending on the story you want to tell. Similarly, a â€œrawâ€ phylogeny can be simplified many different ways. Your display should reflect what features are salient to your story. Your story can be about a surprising homoplasy, a hypothesis about rates of evolution, a trait that seems to transition easily, whatever you find interesting. Itâ€™s your story to tell.
https://pronursingexperts.com/wp-content/uploads/2020/08/pronursingexperts-300x64.png 0 0 admin https://pronursingexperts.com/wp-content/uploads/2020/08/pronursingexperts-300x64.png admin2021-02-14 05:11:272021-02-14 05:11:27gather relevant data from a genetic database use the data to infer a phylogeny and interpret your results
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