Question detail

Which option gives the correct cause-and-effect relationship for Reproduction, Genetic inheritance: students must explain the terms homozygous and heterozygous.

Try the question, check the answer, then read the explanation to understand the curriculum point.

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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 explain the terms homozygous and heterozygous.
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 explain the terms homozygous and heterozygous.
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 explain the terms homozygous and heterozygous.. 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 explain the terms homozygous and heterozygous.. Correct cause and effect: DNA is the molecule; a gene is a functional section of that molecule. This matches Genetic inheritance because students must explain the terms homozygous and heterozygous. is correct because DNA is the molecule; a gene is a functional section of that molecule. The learning objective says students must explain the terms homozygous and heterozygous, 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

Confusing homozygous with heterozygous

Students often think a homozygous individual has two different alleles, or that heterozygous means both alleles are the same.

Clarify that homozygous means both alleles are identical (AA or aa) and heterozygous means the two alleles are different (Aa).

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