A single base-pair deletion would cause a frameshift mutation, disrupting every codon sequence read after it. A single base-pair change, however, only affects one codon. It is therefore less likely to cause harm.
Answer:
Chlorofluorocarbons...............
B. Scientific theory
A scientific theory is an explanation supported by scientific evidence. How ever many times you test it, you will get the same result.
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Answer:
breed, while the ones not so well adapted die off.