Biology 9700 · AS & A Level · Principles of genetic technology

Principles of genetic technology — practice question

Section B. Answer one question.
(a)[9]

Describe how gel electrophoresis is used to distinguish between two alleles of a gene.

(b)[6]

Outline the advantages of screening for mutations in the genes for breast cancer, BRCA1 and BRCA2.

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This 15-mark question has a full step-by-step worked solution and mark scheme. One marking point: “DNA cut using restriction enzymes” …

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