Question: why is dna useful in tracing evolutionary changes?
a)dna contains only elements,...
Question: why is dna useful in tracing evolutionary changes?
a)dna contains only elements, so it does not react easily.
b) many organisms do not contain dna.
c) certain mutations in dna happen at a constant rate.
d) dna does not change over time, making it a valuable clue.
Answers: 2
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