- Download the â€œAssessment 4 Worksheet.â€ Begin working on the worksheet after reading through this document.
- Citations must follow the guidelines in the coursepack: â€œLiterature Citation Requirements.â€
- Feel free to use your notes while working on this assessment.
- Point values are provided in the rubric.
- 5.Students can discuss with each other only their research approach. Do not send drafts of this assessment to each other or copy answers. This assessment is submitted to Turnitin and checked for plagiarism, including copying websites or your peers.
- Save the document as a Microsoft WordÂ® document.
- Create a final version of the phylogenetic tree. Include the six species and the four characteristics. Feel free to either hand-draw it neatly and take a photograph or create it using a program, such as Microsoft PowerPoint Â® and then saving the slide as an image. Paste the image in the worksheet.
a.Turnitin produces a similarity score and we use that score to indicate which ones to check further for plagiarism
b.There is not a set similarity percentage that indicates plagiarism. The similarity will depend on the length of the answers and if the questions are restated in those answers.
For this assessment, students will be creating a phylogenetic tree of the candidate species and closely related species. This will be part of an investigation to determine if there is a possible surrogate species.
What is a Surrogate Species?
To bring a species â€œbackâ€ from extinction an embryo carrying the genetic information of the extinct species needs to be implanted into a mother so that it can develop. For some species, the mother may also provide parental support for the offspring. This mother is referred to as the â€œsurrogate.â€ Surrogacy typically takes place in a controlled environment. Your candidate species is now extinct. Is there an appropriate surrogate for that species? If so, which species is it and why? The first step in answering this question is to determine which species are closely related to the candidate species. Therefore, for this assessment, students will create a phylogenetic tree.
Part 1: Finding Species
- Record your de-extinction candidate species in the worksheet.
- Go to the IUCN Redlist site for your species. Scroll down to the section titled â€œTaxonomy.â€ Record the taxonomic information in the worksheet.
- The taxonomic rank of Genus is the most exclusive of these ranks. That means species within the same genus are very closely related. The first search you should make to find a surrogate is to search the same genus within the IUCN list. Do this now.
- Now, if you do this original Genus search and no other species are found (or you do find other species, but no information is available), then go to the next most exclusive taxonomic rank, which is Family. Species within the same family are closely related but not as close as those species within the same genus. However, a species from the same family will do just fine. Do this now.
- The first part of determining how closely related the species are is considering the taxonomy, which you discovered in Part 1. For instance, if some of the species are in the same genus while others are in the same family, then those in the same genus are more closely related to each other than those in a different genus. If you chose more than one outside the candidateâ€s genus, then check to see if the genus of those species is the same or different. If they have the same genus, then they are more closely related to each other than the candidate species. If it is different then their relatedness cannot be determined just by the genus.
- The next step is to identify the species on One Zoom, which is an interactive phylogenetic tree that you may have used for the museum activity.
- On the worksheet, 1) describe the predicted relatedness of the six species in words (like the descriptions that were provided during the in-class portion of the museum activity) and 2) describe the process that you used to determine their relatedness. There are six species total (the five closely related species and the candidate species). If they are all the same genus and not on One Zoom, then it is okay to just use shared derived characteristics to predict their relatedness, like the museum activity.
- Create a rough sketch of the phylogenetic tree of the six species- do not include it in the worksheet at this point.
- Predict four shared derived characteristics of different clades. Use information from the IUCN Red List or other sources to determine this. Consider physical and behavioral characteristics, if available. Recall that habitat is not a characteristic, but physical characteristics suitable for types of habitats may be shared derived characteristics.
a.If you find one or more additional species in your search, then select the first one on the list for your surrogate.
b.Click on this species; is any information available on the IUCN site?
c.If so, then youâ€ve found one potential surrogate.
d.If not, go back to the list and click on the next species in the list.
e.Repeat this until you have five species with some information.
f.If you exhaust the â€œgenusâ€ species list, then skip down to step #4.
g.Record the common name and scientific name of the species in the worksheet. Include the five that have some information. Note that scientific names are always italicized.
h.Skip down to section â€œPart 2: Determining Relatednessâ€ if you have five species.
a.As above, select the first species on the list and determine if there is any information.
b.Repeat this until you have five species with some information (or go to the next taxonomic ranking, which is order).
c.Record the common name and scientific name of the species in the worksheet. Note that scientific names are always italicized.
Part 2: Determining Relatedness
a.Once on the website, click on the â€œExploreâ€ tab and select the appropriate taxonomic group or â€œall complex life.â€
b.Then either explore the tree to find your species or type the family or genus name in the search textbox in the upper-right corner of the webpage.
c.If your species are not listed, then make a prediction of their relatedness based on similar species that you find on One Zoom.
Part 3: Identifying Characteristics
Part 4: Surrogate Species
After creating the phylogenetic tree, reflect on which species is the most suitable surrogate species and to what extent that species is a suitable surrogate. Consider evolutionary relatedness, shared derived characteristics, and IUCN conservation status (i.e., endangered, least concern, etc.). Type a reflective paragraph in the worksheet that provides your conclusion (which species and how suitable of a surrogate it would be) and evidence supporting your
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