Biology for IGCSE & O level - Inheritance (Section 2 - No. 5)
What are some key characteristics of genetic mutations?
They are always beneficial.
They can alter the DNA sequence.
They can be spontaneous or induced by mutagens.
They always result in a change in phenotype.
Explanation
Mutations change the DNA sequence; can be caused by various factors, however, mutations aren't always beneficial nor do they always result in a phenotypic change.
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