Unit 18 · Variation and Selection

Question Bank

Cambridge IGCSE Biology 0610 · 80 questions

Q76Variation and Selection

What is the source of new alleles?

(a)Mutation

(b)Fertilisation

(c)Selective breeding

(d)Mitosis

Correct answer: (a) Mutation

Explanation: Mutations change the DNA base sequence, creating new alleles.

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