Making millions of copies of "junk DNA" markers.
| Term | Definition | | :--- | :--- | | | A protein that cuts DNA at a specific sequence (restriction site). | | PCR | A technique to amplify a specific DNA sequence into millions of copies. | | Gel Electrophoresis | A technique separating DNA fragments by size using an electric current. | | STR (Short Tandem Repeat) | Repeating sequences of non-coding DNA used for human identification. | | RFLP | Differences in fragment lengths resulting from variations in restriction sites. | | DNA Ladder | A standard sample containing fragments of known sizes used to calibrate a gel. | | Negative Control | A sample with no DNA (e.g., water) to confirm no contamination. | | Positive Control | A DNA sample of known profile to confirm the gel worked correctly. | Biology Unit 3 Genetics The Case Of The Hooded Murderer
What happens to the case if a lab technician’s DNA falls into the sample? Making millions of copies of "junk DNA" markers
However — Rev. Silas Cole’s DNA matches the gate blood and the hair? Wait — re-read the table. Rev. Cole’s alleles at all three STRs are identical to Dr. Voss’s. | | Gel Electrophoresis | A technique separating