Chromosome non-disjunction, anaphase lag and endoreplication
A scientist may use molecules - enzymes, proteins, DNA, RNA - to test for similarities, because if anatomy alone was used, it would be difficult to link traits and characteristics between the two organisms. For example, a rabbit has an endoskeleton and a closed circulatory system, while a fly has an exoskeleton and hemocoel.
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Atoms are the building block of everything
Answer: It's most likely Gamma Rays.
Explanation: