DP Biology (first assessment 2025)

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Question 19M.1A.SL.TZ1.36

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1A.SL.TZ1.36
Level SL Paper 1A Time zone TZ1
Command term Deduce Question number 36 Adapted from N/A
36.
[Maximum mark: 1]
19M.1A.SL.TZ1.36

The diagram shows the chromosomes derived from a single homologous pair following meiosis in a diploid cell.

Which diagram represents the homologous pair from which these chromosomes were derived?

[Source: © International Baccalaureate Organization 2019]

[1]

Markscheme

D

Examiners report

Perhaps surprisingly this proved to be the easiest question on the exam, with 86 % answering correctly. This is pleasing as it shows widespread understanding of recombination in meiosis.

Syllabus sections