Answer:
<u>It takes two copies of the mutant gene.</u>
Explanation:
<em>One from each parent, to give somebody the all-out sickness. Numerous individuals have only one duplicate, the other being typical.</em>
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Hope this helped and have a great afternoon!
<em>~ChokieWokie~</em>
Answer:
Mutations are permanent changes in the DNA due to changes in nucleotide sequences. Mutations that cause addition of extra nucleotides in a nucleotide sequences are known as frameshift mutations
