<span>Harmful traits are produced by most mutations. S</span>ometimes the mutation can create nonsense codons that do not produce any amino acid and signals the cell to end the process. So, this causes the cell to do different things than what it was meant to. Most mutations are destructive and cells have a method of examining if they have mutated or not. Its only when the checking fails that the cell becomes mutated.
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D. there is not variable but for you
Answer:A selectively permeable cell membrane is one that allows certain molecules or ions to pass through it with active or passive transport.
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