Researchers Use the Denaturation Temperatures of Hybrid Double Helices to Compare

question 4

Multiple Choice

Researchers use the denaturation temperatures of hybrid double helices to compare evolutionary relatedness. Complementary strands denature at 95 degrees. A researcher engineers a hybrid strand from two species and it denatures at 93 degrees. What does this mean?

• A)The hybrid double helices are more complementary than the non-hybrid.
• B)The hybrid double helices are less complementary than the non-hybrid.
• C)The species are more closely related than any other two species.
• D)The hybrid strands' base pairs had fewer mismatches.

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