Continuity and Change D.5 Gene Expression (id: 1de5495d9)

本题目来源于试卷: Continuity and Change D.5 Gene Expression，类别为 IB生物学

[问答题]
The graphs show the results from a long-term study on 86 pairst)k (5ena;7k d* jqce:agvh+u of monozygot tmdap4wrj2-.ic twins, over 80 years. .aj-t r4wmdp2



1.Describe the relationship between the percentage similarity in DNA methylation pattern and age.

2.Explain the relationship that you referred to in part (a).

3.Explain the effect that DNA methylation most likely has on gene expression.

4.Explain why monozygotic twins were used in this study.

5.Suggest one limitation of conducting a study in humans over 80 years.

6.Evaluate whether this study provides evidence that decreases in the percentage of DNA methylation is a predictor of an early death.

7.Distinguish between the genome and the epigenome.

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