After extraction, the quality and quantity of DNA need to be assessed to ensure it is suitable for downstream applications. This can be done using several methods:
Spectrophotometry: Measuring the absorbance at 260 nm (A260) to determine DNA concentration and using the A260/A280 ratio to assess purity. Fluorometry: Using fluorescent dyes that specifically bind to DNA to measure concentration. Gel Electrophoresis: Running the DNA on an agarose gel to assess the integrity and size distribution of the extracted DNA.