Csi wildlife analyzing genetic evidence worksheet answers

One type of evidence they use is genetic data. In this activity, you will use DNA analysis to solve several crimes related to elephant conservation, a field of science known as wildlife forensics. You have just been hired by an international police force to work as a forensic scientist dedicated to protecting wildlife and investigating illegal activity where protected animals are involved.

In particular, you will be focused on the protection of African elephants. You are excited to put your scientific skills to work. Elephants are a keystone species and play a pivotal role in shaping the forests and savannas in which they live. Knowing the importance of elephants, an international group of scientists conducted a census to estimate the number of African elephants. What ideas do you have for why the number of elephants is declining?

You have likely heard of investigators using DNA fingerprinting to identify individuals in crime scene investigations. Briefly describe your current understanding of the process of DNA fingerprinting. Part 1: Now that you have shared with your boss what you already know, she is ready to send you for training.

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Your colleagues in the legal department are preparing to take a case to trial. To help them, rewrite your description of the process of DNA fingerprinting so a jury could understand it. Now you are ready for your first major assignment. Your colleagues are investigating a newly seized tusk and wonder if the tusk is from a recently discovered crime where 10 elephants from the same population were found dead with their tusks removed.

The genotype of the seized tusk for five short tandem repeat STR loci is shown in Table 1.

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Allele names for each of the STR loci correspond to their size in base pairs bp. Table 2 lists the genotypes of the same five STR loci for 10 recently slaughtered elephants. Elephant 2 62 95 62 Elephant 3 97 64 91 62 Elephant 4 64 95 62 Elephant 5 95 64 91 64 Elephant 6 97 64 97 60 Elephant 7 97 62 97 62 Elephant 8 62 97 62 Elephant 9 97 62 95 62 Elephant 10 62 Table 2: Genotypes using five STR loci for 10 slaughtered elephants.

Did the seized tusk come from one of the recently slaughtered elephants? Draw the expected pattern of bands on a gel that shows the alleles for the seized tusk and the elephant you identified as a potential match, for STR loci FH60 and FH Your next challenge is to calculate the probability that another elephant from the same population would have the same genotype as the one from the seized ivory sample.

Calculate the frequency of each of the alleles found in the ivory sample using data from the 10 slaughtered elephants. The ivory sample was homozygous for the bp allele. In the sample of 10 elephants, 12 alleles were also bp in size, out of a total of 20 alleles. Look at how these data are used to determine the frequency of the allele in Table 3.

Use the same approach to calculate the frequency of the other four STR loci in the table on the following page.

Elephant Poaching Forces This Community to Take Sides - National Geographic

Some of the data is provided for you. Use the formulas below to calculate the probability of another individual having the same genotype for each individual locus.

Enter the formulas and probability in Table 4.PowerPoint presentations, student worksheets, review activities, and quizzes are available for each unit. Here are some ideas to get you started:.

Community Answer The first draft of a short story can be written in a day, but depending on the length it will take a lot of discipline.

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Coronavirus Vs. Your boss promotes you to lead a new case. See what your friends are reading. Write the word. This is easily adaptable to the classroom for review games. Introduction All departments are required to regularly monitor actual activity to planned activity and control their expenditure to ensure that it is in line with available funds.

New games every day!. Turn on the and range layers on the map. Map of African Elephant Range. A career exploration tool that helps students make academic and career decisions based on what truly drives them. Snow College is ranked as the number one college in America for student success.

Primary Browse over 3, resources, tailored professional development, news, opinions and online community discussions for teachers of science, mathematics, design and technology and computing. Schools in India are recognised by the boards with which they are affiliated. External Link. Different types of forensic science are used to solve crimes using the scientific method. Find the best information and most relevant links on all topics related toThis domain may be for sale!. In this activity, you will use DNA analysis to solve several crimes related to elephant conservation, a field of science known as wildlife forensics.

Red lead paint suppliers uk national lottery. Users will answer questions and be provided with detailed free information about their type with the option to explore all 16 types. Illegal Ivory SmugglingThe black-market value of elephant tusks has quadrupled since In this episode of 'Technique Critique', crime scene analyst and investigator Matthew Steiner examines forensics investigations in crime scenes from movies a.Read the introduction and watch the opening video.

What is a keystone species? Wasser states that approximately 50, African elephants are killed each year. According to the video, it is estimated that there are aroundAfrican elephants. If these numbers are correct, approximately what percentage of African elephants are killed each year? Show your work. In one or two sentences, summarize Dr. Watch the crime scene video on the first slide of Case One. Explain the goal of the case.

CSI Wildlife

Look at the map provided and list the region or countries the majority of African elephants inhabit. Place a check next to the characteristic s that are shared. Flanking sequence Same number of units. A common misconception about DNA fingerprinting is that the analysis has to do with actual fingerprints.

Watch the animation on the polymerase chain reaction under Technique. Why are flanking sequences important for amplifying STR fragments? A scientist makes primers specific to a particular STR fragment in elephants.

These primers are then used to amplify the STR fragment from 10 different elephants. Would you expect the fragment to be the same size in all the elephants? Explain your answer. Explain how they are able to do that. What is the relationship between the size of a DNA fragment and the distance it migrates in the gel? Run the gel in the Technique section by pressing the Start button. Which elephant left or right has both the largest and smallest fragments?

Proceed to the Application section and look at the gel.Based on the genetic analysis so far, you eliminated all forest elephants and savanna elephants from the north and south. That means the ivory sample most likely came from a savanna elephant population in eastern Africa. In your analysis you used several markers in three far-apart populations.

To determine a more precise location, scientists compared the ivory sample genetic profile to many more populations, some very close together geographically and thus more similar to one another, using 16 markers and taking into account allele frequencies. In this case, Sam Wasser and colleagues were able to assign the ivory sample to a protected area in Tanzania.

Performing the same analysis for additional tusks in the shipment remember there were over tusks! As you will discover in the "Ivory Trade" section, Tanzania is one of the hotspots for elephant poaching. The "x" shows the probable origin of the poached elephant.

It is in a region of east Africa between four sampled elephant populations. Case Solved! Next Page. Eastern Savanna Elephant Populations The "x" shows the probable origin of the poached elephant.Comparison of the casing found at the scene with a casing test fired from recovered gun. Investigate a shooting crimes scene where an animal has been killed, and determine trajectory angle of the shooter, if the shooter was standing, and the possible distance of the shooter. Determine trajectory Angle of shot, standing or lying downand possible distance the shot was fired.

CSI Wildlife Worksheet2

Obtain DNA swabs from evidence to be sent to a lab for testing. Presumptive testing of blood to determine if human or animal. Suspect cell phone analysis. Obtaining messages, data, phone numbers, directory information. Computer download and analysis.

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Analyze a suspect computer and investigate its contents. There is a possibility of even recovering deleted data. Even deleted data can be recovered. Training to recover latents fingerprints from horns and tusks, and submit to a database.

Explaing the operation of a trap camera to Anti-Poaching personnel. Evidence collection training. Our Team. Cheetah Project. Wildlife Crime Scene Investigation. Digital Forensics. DM - Into the Wild.

Fingerprint Database.

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About Us. Our School Project. What we can do for you. Gun Shot Residue testing to identify shooter. Find the possible cause of death. Recover latents from horns and tusks. Social media investigation and locating subjects. Location tracking. Submit a Request.This interactive module allows students to use DNA profiling and related biological concepts to solve two cases of elephant poaching.

Students explore actual cases, adapted for use in the classroom, in which scientists use DNA profiling to investigate the elephant poaching that supplies the ivory trade. In the process, students learn about genetic markers, PCR, gel electrophoresis, allele frequencies, and population genetics.

Not all downloadable documents for the resource may be available in this format. Wasser, S. Brown, C. Mailand, S. Mondol, W. Clark, C. Laurie, and B. The article's underlying data are available from the Dryad Digital Repository. An annotated version of the article is also available from Science in the Classroom. Please see the Terms of Use for information on how this resource can be used.

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Skip to main content. Share This. Description This interactive module allows students to use DNA profiling and related biological concepts to solve two cases of elephant poaching.

This worksheet can serve as a record of completion, as well as a reference for key concepts. It requires students to think scientifically, use math appropriately, and apply claim-evidence-reasoning to support their thinking. It may be helpful for students who are new to frequency and probability calculations.

CSI Wildlife Worksheet1

Student Learning Targets Analyze and interpret gel electrophoresis results to determine relationships between individuals and populations.

Use allele frequencies to calculate the probability of two individuals sharing the same genetic profile. Explain how the geographic and genetic distances between two populations are related. Explain how genetic data helps law enforcement officers and conservationists decide where to target their efforts.

Details Estimated Time. One to three minute class periods, depending on the amount of in-class discussion and which worksheet is used. Accessibility Level. This resource complies with accessibility standards in accordance with the final rule for Section of the National Rehabilitation Act. Educator Tips Hear how educators are using BioInteractive content in their teaching.

View Article. Previous Slide Next Slide. Explore Related Content. Other Resources About Elephants Showing of. Analyzing Data on Tuskless Elephants. Developing an Explanation for Tuskless Elephants. Selection for Tuskless Elephants.

How Animals Use Sound to Communicate. Studying Elephant Communication.Please report any problems. To use our site as it is intended, you will need to download a newer browser. The browsers we support are: Internet Explorer 8 Internet Explorer 9 Internet Explorer 10 Firefox Chrome Safari Betting on auto racing has exploded in popularity in Vegas in recent years, and its appeal continues to grow. The structure of betting on auto racing is similar to that of golf.

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