O-LevelBiologyGenetics & Variation5090/11 · May/June 2012 · Q361 Mark

In the female reproductive cycle, which sequence of events could occur in 28 days?

Afertilisation → ovulation → implantation

Bimplantation → ovulation → fertilisation

Cmenstruation → ovulation → fertilisation

Dovulation → fertilisation → menstruation

✓ Correct answer

C: menstruation → ovulation → fertilisation

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Topic: Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2012 Paper 1 Variant 1, question 36.

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