DP Biology (first assessment 2025)

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Question 19M.2.SL.TZ2.4b

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.2.SL.TZ2.4b
Level SL Paper 2 Time zone TZ2
Command term Explain Question number b Adapted from N/A
b.
[Maximum mark: 2]
19M.2.SL.TZ2.4b
(b)

Explain one cause of mutation.

 

[2]

Markscheme

Not chromosomal.

Examiners report

Many were confused by a relatively simple question, but a large proportion gained both marks by linking radiation or carcinogens to changes in the DNA base sequence.

Syllabus sections