- The DNA profiling process begins with extracting DNA from a sample.
- Restriction enzymes are used to cut the DNA at specific base sequences, creating fragments of varying lengths.
- These DNA fragments are loaded into wells in an agarose gel.
- An electric current is applied during gel electrophoresis, causing the fragments to separate by size; smaller fragments move farther than larger ones.
- The gel is stained to visualize the distinct banding pattern of DNA fragments, which forms a unique profile for each individual.
- To determine parentage, the child’s DNA profile is compared to those of the mother and father; half of the child’s bands should match the mother’s and half should match the father’s.
Parent Tip: Review the logic above to help your child master the concept of dna fingerprint worksheet.
