Question detail
Which option avoids the common misconception in this objective for Reproduction, Genetic inheritance: students must use probability to predict the results of a single-gene cross.
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. Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross.
- B. Common misconception: Explaining protein coding without naming the gene as the relevant section of DNA. This would blur DNA vs genes instead of testing Genetic inheritance.
- C. Partial misconception: Treating DNA as if it always means one gene. This misses the objective focus on use probability to predict the results of a single-gene cross.
- D. Terminology mix-up: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Genetic inheritance.
Answer
The correct option is Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross.. It is the only option that keeps DNA vs genes separate and answers the approved learning objective in Genetic inheritance.
Explanation
The correct option is Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross.. Misconception avoided: A DNA base sequence is the storage format; a gene is the named instruction unit. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross. is correct because A DNA base sequence is the storage format; a gene is the named instruction unit. The learning objective says students must use probability to predict the results of a single-gene cross, so the answer must stay inside Genetic inheritance. The alternative options are wrong because they either explaining protein coding without naming the gene as the relevant section of dna., treating dna as if it always means one gene., or drift away from do not use dna, gene, and chromosome as interchangeable answers..
Common mistake
Misinterpreting allele frequencies
Students often assume that the probability of an offspring inheriting a particular allele is simply the proportion of that allele in the parents, without considering the number of alleles each parent contributes.
Explain that each parent contributes one allele per gene, so the probability is based on the combination of the two alleles each parent carries, not the overall allele frequency in the population.
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