In order for an inherited genetic mutation to result in a phenotypic change for a recessive trait, which of the following must occur? a: the mutation must be inherited on the x chromosome. b: the mutation must be inherited by both parents. c: the mutation must be inherited from the mother. d: the mutation must be inherited from the father.

The correct answer will be option-B.

Explanation:

The mutations take place in the nucleotide base pairs due to the substitution, addition or deletion of the base in the sequence.

These mutations could prove harmful or useful to the organism depending on the niche it is living.  These mutations become established in the population only after they are transferred from the parents to the offsprings through the chromosomes of the parents.  

Thus, the mutation must be inherited through the chromosomes of both the parents and Option-B is the correct answer.

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