DP Biology (first assessment 2025)

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Question 22M.1A.SL.TZ2.13

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.13
Level SL Paper 1A Time zone TZ2
Command term Question number 13 Adapted from N/A
13.
[Maximum mark: 1]
22M.1A.SL.TZ2.13

Which statement defines alleles?

A. They are the different forms of a gene that have the same effect on the phenotype.

B. They are the similar forms of a gene in different positions of a chromosome.

C. They are the various forms of a gene with slight differences in their base sequences.

D. They are the different forms of a gene coding for identical polypeptide chains.

[1]

Markscheme

C

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