Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter15: Genomes And Genomics
Section: Chapter Questions
Problem 6QP: Which of the following best describes the process of DNA sequencing? a. DNA is separated on a gel,...
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Can a doctor make a plan for treatment for a person based solely on the information in the gel above? Why or why not?

Transcribed Image Text:### Gel Electrophoresis Analysis
**Gel Image Description:**
A gel electrophoresis image is presented with five distinct lanes containing DNA samples. The bands represent DNA fragments separated by size, with the smaller fragments traveling further down the gel.
**Lane Descriptions:**
- **Lane 1 (Tube A) - DNA Standard Markers:**
- Contains standard markers used as a reference to estimate the sizes of DNA fragments in other samples.
- **Lane 2 (Tube B) - Control DNA:**
- Shows a single band at 4282 base pairs (bp).
- **Lane 3 (Tube C) - Patient Peripheral Blood DNA:**
- Shows three bands corresponding to 4282 bp, 3000 bp, and 1282 bp.
- **Lane 4 (Tube D) - Patient Tumor DNA:**
- Displays two bands at 3000 bp and 1282 bp.
- **Lane 5 (Tube E) - Patient Breast Normal DNA:**
- Shows three bands at 4282 bp, 3000 bp, and 1282 bp.
### Table Detail:
Below the gel image, a table lists the details of each lane:
| Lane | Tube | Sample | Molecular Weights (in bp) |
|------|------|------------------------------|---------------------------|
| 1 | A | DNA Standard Markers | --------- |
| 2 | B | Control DNA | 4282 |
| 3 | C | Patient Peripheral Blood DNA | 4282, 3000, 1282 |
| 4 | D | Patient Tumor DNA | 3000, 1282 |
| 5 | E | Patient Breast Normal DNA | 4282, 3000, 1282 |
This analysis is used to compare DNA samples from different sources, identifying unique patterns of DNA fragment sizes that may indicate genetic variations or mutations.
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