IB Biology SL D1.1.5 Applications Questions
In IB Biology SL D1.1.5, see how PCR and gel electrophoresis support DNA profiling for forensic identification and paternity testing.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Describe how PCR and gel electrophoresis support DNA profiling for forensic identification.
- Apply DNA-profile band patterns to assess a forensic match or paternity.
IB Biology SL D1.1.5 Applications Questions question 1
[Maximum number: 5]
Describe the application of DNA profiling to determine paternity.
a. DNA from child, mother and possible father(s) used to establish paternity;
b. (DNA profiling is done) for legal reasons / divorce / inheritance;
c. (DNA profiling is done) for personal reasons / self-esteem issues for children/fathers/parents;
d. DNA copied/amplified using PCR;
e. DNA cut using restriction enzymes;
f. (gel) electrophoresis used to separate DNA fragments;
g. pattern of bands is produced (in gel);
h. analysed for matches between child with mother and possible father;
i. (about) half the child's bands will match the father (while the other half will match the mother);
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