DP Biology (first assessment 2025)

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Question 21N.1A.HL.TZ1.27

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.HL.TZ1.27
Level HL Paper 1A Time zone TZ1
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
21N.1A.HL.TZ1.27

What is the difference between the DNA of adult identical (monozygotic) twins?

A. Order of genes

B. Sequence of nucleotides

C. Methylation pattern

D. Ratio of complementary base pairs

[1]

Markscheme

C

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