The R-group (side chain) is what makes each amino acid unique. Each of the 20 amino acids has a different side chain structure.
Mutations result from an error in DNA replication, should it be from an alien source (like radiation) or simply a mistake in replication.
Migration of organisms to a new population would alter the DNA by adding new genes, but it would not mutate them.
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Answer:
acceleration = force / mass
Explanation:
Increase in population in human and ticks that carried disease
