Q111 · Practice questionComplex familiar1 mark
QUESTION 111
A UV-induced DNA mutation occurs in a skin cell. The cell divides and passes the mutation to its daughter skin cells. No gamete or gamete-forming cell carries the mutation. Which statement is supported?
(A)
The mutation must occur in every cell of the organism.
(B)
The mutation can spread through that skin-cell lineage without being inherited by offspring.
(C)
Every future child must inherit the mutation.
(D)
The mutation proves that no DNA replication occurred.
WORKED SOLUTION
1 markAnswer B
Answer
B
Working
Somatic cell division can preserve a mutation in a cell lineage. Under the supplied conditions it is not transmitted through a gamete to offspring.
Marking criteria
- Select B. [1 mark]
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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