IB Biology HL A1.2.1 DNA as Genetic Material Question Bank
Practise IB Biology HL A1.2.1 by identifying DNA as the genetic material in plant genomes and interpreting repeated evidence.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Identify DNA as the genetic material in plant genomes and biological inheritance evidence.
A1.2.1—DNA as genetic material question 1
The image shows the results of Griffith's experiment with S and R strains of Streptococcus pneumoniae in mice (Mus musculus).
What is an explanation for the results?
A
Mice vary in their resistance to bacteria.
B
The R strain and S strain mated.
C
R strain bacteria are more heat-stable than S strain.
D
DNA was transferred from heat-killed S cells to R cells.
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