To what extent do genetics or environmental factors have a larger role in determining gene expression respectively, as researched in monozygotic twin model studies and observations in DNA methylation changes?SL
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A
Official IB Result
IB Grade: A
Criteria A: Focus and Method
5/6
0
3
6
Criteria StrandsPro
A.1Topic communication and explanation
Good
A.2Research question formulation and focus
Moderate
A.3Methodology appropriateness and completeness
Moderate
Criteria Feedback
- The student communicates a clear biological topic and makes good use of monozygotic twin studies as a relevant research context.
- The student's investigation is generally well organized and the reader can follow the intended line of inquiry.
- The student shows awareness of the need to justify source selection and methodological choices.
- The student's research question is too broad, and the wording does not make the comparison fully precise.
- Some aspects of the method are not fully aligned with what the student's sources can actually compare.
- A few biological concepts, especially around methylation and gene expression, need to be stated more precisely.
Criteria B: Knowledge and Understanding
4/6
0
3
6
Criteria StrandsPro
B.1Application of source material
Good
B.2Use of terminology and concepts
Good
Criteria Feedback
- The student uses relevant biological terminology and shows familiarity with key epigenetic ideas such as methylation, CpG sites, promoters, and DMRs.
- The student generally connects source material to the investigation rather than leaving it as isolated background.
- The student includes useful scientific detail from the studies, such as sample characteristics and measured epigenetic changes.
- Some terminology is used imprecisely, especially when methylation is treated as if it were the same as gene expression.
- A few explanations overstate what the evidence proves and move too quickly from association to causal interpretation.
- There are some factual and conceptual slips in the background biology that should be corrected for accuracy.
Criteria C: Critical Thinking
12/12
0
6
12
Criteria StrandsPro
C.1Research analysis
Moderate
C.2Discussion and evaluation
Moderate
C.3Argument development
Moderate
Criteria Feedback
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Criteria D: Presentation
4/4
0
2
4
Criteria StrandsPro
D.1Structure appropriateness
Excellent
D.2Layout and formatting
Excellent
Criteria Feedback
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- Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
- Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
- Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.