HSC Biology · NSW Year 11 & 12

HSC Biology
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Short answer · 4 marks · Module 6

Explain how a change in DNA sequence can lead to a change in the phenotype of an organism.

Your answer

A mutation changes the base sequence, altering the mRNA codon and the amino acid added during translation. This changes the protein’s structure and therefore its function, which can change the phenotype.

Feedback3 / 4

Strong cause-and-effect chain. To reach 4 marks, link it to a named example (e.g. sickle-cell anaemia) and state that the altered protein affects a specific observable trait — markers reward a worked example.

Practise across HSC Biology topics — built from your own notes

HeredityGenetic ChangeInfectious DiseaseNon-infectious Disease & DisordersEvolution
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Short-answer and multiple-choice questions in HSC Biology format, generated automatically.

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Write full responses. Exammable scores them like a marker and shows what to add for the next band.

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Questions generated from your own Biology notes and dot points.

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HSC Biology questions, answered

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