How could a trait disappear in one generation

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How could a trait disappear in one generation and reappear in the next?

(a) The trait was absent in the previous gennerations because they each carried at least one dominant allele.

(b) The gene must have been unstable and switched between being mutant and not being mutant.

(c) When the trait reappears in the grandchildren it must have resulted from a brand new mutation in the gene that did not exist in the parents or grandparents.

Reference no: EM132389255

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