Question detail
Which option best matches the approved learning objective for Genetic inheritance (1)?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reproduction
Question
- A. It means students should be able to use direct proportion and simple ratios to express outcomes of a genetic cross.
- B. It means gene is never assessed in Reproduction.
- C. It means learners only need to memorise the topic title for Genetic inheritance.
- D. It means students should give the opposite of the approved learning objective.
Answer
The correct answer is It means students should be able to use direct proportion and simple ratios to express outcomes of a genetic cross..
Explanation
The correct option is It means students should be able to use direct proportion and simple ratios to express outcomes of a genetic cross. because it directly reflects the approved learning objective: Use direct proportion and simple ratios to express outcomes of a genetic cross..
Common mistake
Misinterpreting Ratios as Percentages
Students often treat the simple ratio 1:2:1 from a heterozygous cross (Aa × Aa) as if it were a percentage, writing 25%:50%:25% instead of the correct ratio of 1:2:1.
Explain that a ratio shows the relative frequency of each genotype or phenotype, not a proportion of 100. Use the ratio 1:2:1 directly, or convert it to percentages by dividing each part by the total (4) and multiplying by 100, giving 25%:50%:25% only after the conversion step.
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