Igcse Model Questions Vol1 2024 Biology Question 21
Practice objective / multiple choice question 21 from the 2024 Igcse Model Questions Vol1 Biology examination.
A man with an X‑linked recessive disorder (genotype \(X^{h}Y\)) marries a woman who is a carrier (genotype \(X^{H}X^{h}\)). They have three children: two sons and one daughter. Assuming independent segregation of sex chromosomes, calculate the probability that (i) exactly one of the sons is affected by the disorder, and (ii) the daughter is a carrier. Give the combined probability that both events occur.
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This is Igcse Model Questions Vol1 2024 Biology Question 21. It is one of the objective questions from the 2024 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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