Question detail
Which option gives the correct cause-and-effect relationship 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. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross.
- B. Reversed cause: Treating DNA as if it always means one gene. This would blur DNA vs genes instead of testing Genetic inheritance.
- C. Missing link: Calling a gene a whole chromosome. This misses the objective focus on use probability to predict the results of a single-gene cross.
- D. Different process: It moves into a neighbouring Unit 4.6 idea rather than Reproduction / Genetic inheritance.
Answer
The correct option is Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. 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 Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic inheritance because students must use probability to predict the results of a single-gene cross. is correct because DNA is the molecule; a gene is a functional section of that molecule. 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 treating dna as if it always means one gene., calling a gene a whole chromosome., or drift away from when asking about dna, test molecular structure, base sequence, nucleotides, or genetic information storage..
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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