Mutations would cause a change in the phenotype of the offspring that was NOT present in the parents.
Explanation:
A mutation causes a change in the initial DNA sequence. Mutation can be deletions, insertion, inversion, substitutions. Mutations can change the phenotype of an organism because they interfere with codons that code for amino acids. Some mutations are lethal, other advantageous while others are silent. These mutations can also be passed down to offspring but only if they can be borne in gametes.
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