DP Biology (first assessment 2025)

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Question 22N.2.SL.TZ0.4c

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Date November 2022 Marks available [Maximum mark: 2] Reference code 22N.2.SL.TZ0.4c
Level SL Paper 2 Time zone TZ0
Command term Explain Question number c Adapted from N/A
c.
[Maximum mark: 2]
22N.2.SL.TZ0.4c
(c)

Explain how the information in the box labelled B indicates that the gene is not sex-linked.

[2]

Markscheme
  1. if it was sex-linked it would be on the x chromosome;
  2. there cannot be a heterozygous male if the trait is sex-linked
  3. males would pass the allele to their daughter;
  4. daughter is not shown as heterozygous so it is not sex-linked;

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