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Genetics and heredity — Question 15

QCAA 2021, Paper 1 · 1 mark

Q15 · 2021 · Paper 1Unclassified1 mark

QUESTION 15

The table identifies the condition associated with a variety of ploidy changes.

Chromosome number (ploidy)

Condition name

Monosomy 5

Cri du chat syndrome

Trisomy 21

Down syndrome

Trisomy 23

Klinefelter syndrome

Monosomy 23

Turner syndrome

For a person who has 45 chromosomes (2n–1) due to an autosomal condition, which condition do they have?

(A) Cri du chat syndrome

(B) Down syndrome

(C) Klinefelter syndrome

(D) Turner syndrome

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