In addition to visual comparison,which of the following would be the best way to determine that S.niagarae and S.yellowstonensis are separate species?

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Comparing the DNA sequences would provide a more definitive and objective way to determine if S. niagarae and S. yellowstonensis are separate species than visual comparison, the presence of chloroplasts or a silica shell, or location in different lakes. DNA sequences can reveal genetic differences that cannot be observed by other means, and can help to identify the degree of evolutionary divergence between two organisms. Carbon dating would not be relevant to determining whether S. niagarae and S. yellowstonensis are separate species, as it is a method for determining the age of organic materials.

In Addition to Visual Comparison,which of the Following Would Be