DP Biology (first assessment 2025)

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Question 21M.1A.SL.TZ2.15

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.1A.SL.TZ2.15
Level SL Paper 1A Time zone TZ2
Command term Question number 15 Adapted from N/A
15.
[Maximum mark: 1]
21M.1A.SL.TZ2.15

A woman with blood type A has three children with a man who has blood type AB. The first child has blood type B. What is the probability that the second child born to the couple will have blood type AB?

A. 0.75

B. 0.50

C. 0.25

D. 0.00

[1]

Markscheme

C

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