Related Experiment Video
Updated: Jul 23, 2025
08:08
Determination of Self- and Inter-incompatibility Relationships in Apricot Combining Hand-Pollination, Microscopy and Genetic Analyses
Published on: June 16, 2020
7.4K
Yield Gel via Quantitative Gel Electrophoresis
Victoria R Parks1, Dayanara A Torres2
1Department of Forensic Science, Virginia Commonwealth University, Richmond, VA, USA. vrparks@vcu.edu.
Methods in Molecular Biology (Clifton, N.J.)
|July 13, 2023
Summary
Quantitative gel electrophoresis estimates DNA quantity and quality using agarose gels and UV visualization. This method helps determine DNA integrity from evidence or reference samples.
Area of Science:
- Forensic Science
- Molecular Biology
- Biochemistry
Background:
- Quantitative gel electrophoresis is an established method for assessing DNA quality and quantity.
- It is crucial for analyzing DNA extracted from forensic or reference samples.
Purpose of the Study:
- To provide a detailed guide on performing quantitative gel electrophoresis.
- To enable accurate estimation of DNA yield and integrity.
Main Methods:
- Preparation of agarose gel with nucleic acid stain.
- Electrophoresis of DNA samples, standards, and a 1 KB ladder.
- Visualization of DNA bands under UV light for analysis.
Main Results:
- High-quality DNA appears as a compact band similar to standards.
- DNA degradation is indicated by smearing instead of a distinct band.
- Successful electrophoresis allows for size-based separation of DNA fragments.
Conclusions:
- Quantitative gel electrophoresis is a valuable tool for initial DNA assessment.
- Proper technique and interpretation are key for reliable results.
- Understanding the method aids in troubleshooting and ensures data quality.
Related Concept Videos
01:22Two-dimensional Gel Electrophoresis
6.1K
Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
6.1K
02:35DNA Agarose Gel Electrophoresis
97.5K
Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
97.5K
01:27SDS-PAGE
28.4K
Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
28.4K
02:57Southern Blot
19.6K
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
19.6K
01:20Electrophoresis: Overview
2.1K
Electrophoresis is a powerful analytical separation technique that relies on the differential migration of charged species when subjected to an electric field. The core strength of electrophoresis lies in its ability to separate high-molecular-weight species in complex mixtures. It has found widespread use in biochemistry, molecular biology, and analytical chemistry, allowing the separation of compounds like amino acids, nucleotides, carbohydrates, and proteins with excellent resolution.
There...
There...
2.1K