Science Homework Help

For this assignment, you will be putting together what you know so far about the evidence collected after Chelsie Vapolt’s death:

• Evidence #1 Hair collected from victim’s bathrobe
• Evidence #2 Hair collected from victim’s night shirt under bathrobe
• Evidence #3 Hair collected from shirt found in Dave’s closet
• Evidence #4 Cloth collected from victim’s hand
• Evidence #5 Shirt from Dave’s closet
• Evidence #6 Pants found in Vapolts’ laundry room
• Evidence #7 Rock found in planter
• Evidence #8: T-shirt found in Vapolts’ bed
• Evidence #9: Carpet in Vapolts’ bedroom

You will need to refer back to:

• Hair Evidence – Chelsie Vapolt
• UV Light Evidence – Chelsie Vapolt
• Kastle-Meyer Blood Evidence – Chelsie Vapolt
• DNA Evidence – Chelsie Vapolt

Evidence Analysis Questions

1. What species did you identify the Evidence #1 to be from? Using at least one structural/anatomical features, describe how you came to this conclusion. (You may wish to revisit the hair Softchalk)
2. What species did you identify the Evidence #2 to be from? Using at least one structural/anatomical features, describe how you came to this conclusion.
3. What species did you identify the Evidence #3 to be from? Using at least one structural/anatomical features, describe how you came to this conclusion.
4. Based on the UV light test, which pieces of evidence contain body fluids? How did you reach this conclusion?
5. Based on the Kastle-Meyer Blood tests, which pieces of evidence contain blood? How did you reach this conclusion? Why were the positive and negative controls included?
6. Looking at the results of the DNA electrophoresis:
   1. Do any of the lanes match? Which ones?
   2. Explain why these lanes match. Use the following terms for full credit: restriction enzyme, fragment, positive charge.
7. Based on your evidence analysis, who is your prime suspect? Is this the same prime suspect that you had last week? Which pieces of evidence support your hypothesis for who the prime suspect is? Does any of this evidence refute this?

Submission

You will need to upload a .pdf with your responses to all questions. I would recommend using a word processor (such as Microsoft Word) or using Google Docs.

Grading

To see how this assignment will be graded, scroll down to view the grading rubric. If no rubric is visible, click on the three dots in the upper right corner of this page, then click “Show Rubric”. If you’re reviewing this assignment using the Canvas mobile app, the rubric is included in the Grade tab.

Note: While I am not specifically grading you on your spelling or grammar, scientific communication is an important skill. Please proofread and spellcheck before submitting to ensure that your ideas come across clearly. Up to 10% may be deducted for excessive grammar and spelling errors that affect the readability of your work.

Rubric

CSI Part 2 – Online

CSI Part 2 – Online

Criteria	Ratings	Pts
This criterion is linked to a Learning OutcomeHair Analysis	6 pts Excellent All hairs identified and the structural/anatomical features that were used to support ID are clearly and correctly explained. 4 pts Minor Deduction 3 pts Incomplete 0 pts No Marks	6 pts
This criterion is linked to a Learning OutcomeUV	3 pts Excellent Body fluids identified and method is clearly and correctly explained. 1 pts Incomplete 0 pts No Marks	3 pts
This criterion is linked to a Learning OutcomeBlood	5 pts Full Marks Blood identified on evidence, and method and reasons for controls are clearly and correctly explained. 3 pts Incomplete 0 pts No Marks	5 pts
This criterion is linked to a Learning OutcomeDNA	5 pts Full Marks All DNA matches are identified and explained. Explanation is thorough and correctly uses all terminology listed. 4 pts Minor Deduction 3 pts Incomplete 0 pts No Marks	5 pts
This criterion is linked to a Learning OutcomePrime Suspect	3 pts Full Marks Hypothesis for prime suspect is supported by the evidence. 1.5 pts Incomplete 0 pts No Marks	3 pts
Total Points: 22

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