Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Please solve question b) and c) * The seized tusks came for elephant #8.
### Analysis of a Seized Elephant Tusk

You are investigating a newly seized tusk and want to determine if it belongs to one of the elephants recently found dead with their tusks removed. The genotype of the seized tusk for five short tandem repeat (STR) loci is provided alongside genotypes from 10 elephants.

### Genotype Data and Analysis

**Table 1:** Genotype for five STR loci from a seized elephant tusk.

- **Seized Tusk:**
  - **FH19**: 193
  - **FH60**: 147
  - **FH67**: 97
  - **FH71**: 62
  - **FH129**: 152

**Table 2:** Genotypes using five STR loci for 10 slaughtered elephants.

The elephants in Table 2 have different genotypes at these loci, which we need to compare with the seized tusk to find a match.

#### a. Identifying the Source Elephant

- **Question:** Did the seized tusk come from one of the recently slaughtered elephants?
- **Answer:** Yes, the seized tusk matches with Elephant 8. The alleles for all STR loci of Elephant 8 correspond perfectly with those of the seized tusk.

#### b. Band Pattern Illustration

- **Task:** Draw the expected pattern of bands for each STR locus.
  - STR loci have distinct allele lengths that correspond to band positions.
  - Include a DNA ladder with base pairs at 75, 125, 150, and 175 for reference.

**Diagram Explanation:**

1. **DNA Ladder Bands:** 
   - Represents standard DNA fragments for size comparison.
2. **Seized Tusk Bands:**
   - Bands at positions corresponding to alleles 193, 147, 97, 62, and 152.
3. **Matching Elephant Bands:**
   - Aligns exactly with the seized tusk, showing identical allele sizes.

#### c. Conclusion from Gel Pattern

The band pattern of the seized tusk and Elephant 8 are identical, confirming that the seized tusk came from Elephant 8. This match supports the conclusion based on DNA profiling, ensuring the uniqueness of DNA fragments and accurately identifying the source.
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Transcribed Image Text:### Analysis of a Seized Elephant Tusk You are investigating a newly seized tusk and want to determine if it belongs to one of the elephants recently found dead with their tusks removed. The genotype of the seized tusk for five short tandem repeat (STR) loci is provided alongside genotypes from 10 elephants. ### Genotype Data and Analysis **Table 1:** Genotype for five STR loci from a seized elephant tusk. - **Seized Tusk:** - **FH19**: 193 - **FH60**: 147 - **FH67**: 97 - **FH71**: 62 - **FH129**: 152 **Table 2:** Genotypes using five STR loci for 10 slaughtered elephants. The elephants in Table 2 have different genotypes at these loci, which we need to compare with the seized tusk to find a match. #### a. Identifying the Source Elephant - **Question:** Did the seized tusk come from one of the recently slaughtered elephants? - **Answer:** Yes, the seized tusk matches with Elephant 8. The alleles for all STR loci of Elephant 8 correspond perfectly with those of the seized tusk. #### b. Band Pattern Illustration - **Task:** Draw the expected pattern of bands for each STR locus. - STR loci have distinct allele lengths that correspond to band positions. - Include a DNA ladder with base pairs at 75, 125, 150, and 175 for reference. **Diagram Explanation:** 1. **DNA Ladder Bands:** - Represents standard DNA fragments for size comparison. 2. **Seized Tusk Bands:** - Bands at positions corresponding to alleles 193, 147, 97, 62, and 152. 3. **Matching Elephant Bands:** - Aligns exactly with the seized tusk, showing identical allele sizes. #### c. Conclusion from Gel Pattern The band pattern of the seized tusk and Elephant 8 are identical, confirming that the seized tusk came from Elephant 8. This match supports the conclusion based on DNA profiling, ensuring the uniqueness of DNA fragments and accurately identifying the source.
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