Lab 8 SCIN130

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Lab 8 SCIN130. Go to: http://media.hhmi.org/biointeractive/click/elephants/dna/index.html

And Click on Case Two

Part 1: Case Two

1. Watch the crime scene video and read the Case Two introduction on the first slide.

a. In Case One, you were looking for a match with an individual elephant. How does

Case Two differ from Case One?

2. Click on Building a Reference Map.

a. Watch the short video. Elephant populations differ from one another. These differences are due to geographic distance and the length of time since their ancestors separated from one another. Explain how this relationship affects their relatedness.

3. Click on Technique in the Building a Reference Map section.

a. How does this gel differ from the gels you studied in Case One?

4. Click on the Application section.

a. Study the gel. Why does the ivory sample contain only two bands while the other lanes (samples A and B) have multiple bands?

b. If an ivory sample has two alleles that are also found in a population sample, does that tell you with certainty that the ivory sample came from that population? Explain your answer.

5. Click on the Review Section.

a. If the scientist had collected 20 dung samples, would you expect more bands, fewer bands, or the same number of bands on the gel? Explain your answer.

6. Proceed to the Finding a Location section.

a. Forest elephants and savanna elephants diverged over 2.5 million years ago, so some researchers think they should be classified as different species. Knowing this information, which genetic profiles would you predict would be more similar to one another: those of a forest elephant and a savanna elephant that are geographically close to one another, or those of two forest elephants that live far apart from one another? Explain your reasoning.

b. On the Eliminating North, East, or South page, which population did you eliminate? Which marker(s) allowed you to make this choice?

c. On the next elimination, which population did you choose? Which marker(s) helped you make this choice?

d. By analyzing many more markers and all the populations, Dr. Wasser linked these seized ivory tusks to which country?

Part 2: Ivory Trade

1. Watch the video on the Stopping Illegal Poaching slide.

a. Name two reasons elephant populations are threatened.

b. In summary, elephants are a keystone species. Based on your knowledge from this lab (Case 1 and Case 2), explain in your own words why it is important to the ecology and ecosystems of Africa to save the elephant populations.

Adapted from: Click and Learn “CSI Wildlife” (2016). CSI Wildlife Explorer Worksheet. HHMI Biointeractive Teaching Materials.

Lab 8 SCIN130

 
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Cell Division Terminology Definition

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Cell Division Terminology Definition.

Cell Division Terminology Definition

 
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Ashford MGT 330 B Week 2 QUIZ

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Ashford MGT 330 B Week 2 QUIZ.

Ashford MGT 330 B Week 2 QUIZ

 
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The Deepwater Horizon Oil Spill

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The Deepwater Horizon Oil Spill. The Deepwater Horizon Oil Spill

 

Assume that you work for Acme Industrial Hygiene Consultants and you are at an event conducting air samples. In your paper, you will discuss:

What was going on during sampling?

What was your sampling method?

What are your results?

You are expected to use the AIHA Statistical Spreadsheet to assist you in analyzing the data. To access the spreadsheet please follow the following directions:

 

You will also need to discuss:

The descriptive statistics for the dataset

The number of samples above the OEL (if any)

What the 95th percentile exposure level would be?

What exposure category you would put the workers’ exposure into (e.g., 0, 1, 2, 3, or 4)?

You will find that each data set has a number of samples broken down into different activities. Assume that each activity would be a different SEG. Select 1 or 2 SEGs for the purpose of your analysis and report. If you choose to use the World Trade Center data, you can choose from either the Lower Manhattan Asbestos Data, or the Staten Island Asbestos Data. You can find the data at the following OSHA website: http://www.osha.gov/nycdisaster/wtc.html

 

APA rules for formatting, quoting, paraphrasing, citing, and listing of sources are to be followed.

 

1. Go to www.aiha.org.

2. Use the search box to search for “Exposure Assessment Strategies Committee.”

3. Click on “Exposure Assessment Strategies Committee.”

4. Scroll down and select “New IHSTAT Macro-Free Version.”

5. Once you have loaded the Excel document, make sure to click “Enable Editing” at the top of the spreadsheet.

6. Under the OEL section, insert the OEL for benzene or asbestos that you will use here.

7. Delete the existing data in the sheet, and enter the trailer sample dataset you choose.

8. As you populate the spreadsheet the statistics will calculate, and the graphs will begin forming the picture of the exposure profile of the trailers.

 

 

Focus on the potential benzene exposure. You will also need to select one SEG / task for the purpose of your research (e.g., boat operators, beach cleanup). The dataset is very large and you will want to keep your research focused to a manageable level. It would be acceptable to select a few of the SEGs for comparison. For example, you could compare the boat operator’s exposure to that of the beach cleanup crew.

You can find the data on the OSHA website at the following address: http://www.osha.gov/oilspills/index_sampling.html

 

You will find that the AIHA spreadsheet does not allow you to enter a “non-detect” value of zero (0). There are various substitution techniques for estimating distribution parameters from datasets containing censored data: each censored datum is replaced with the (1) LOD, (2) half of the LOD, (3) or LOD divided by the square root of 2. Simple substitution (just using the actual LOD) works well when the percentage of LOD values is small. See Unit VIII Study Guide for more information.

 

An example report is provided to give you an idea of how to properly develop a comprehensive written report. Your report does not have to follow this exactly; it is provided as an example only. However, your report should address all 7 items listed above for full credit.

 

Click here to access the sample report.

The Deepwater Horizon Oil Spill

 
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