What Was the Advantage of Looking for DNA Samples in Permafrost

question 20

Multiple Choice

What was the advantage of looking for DNA samples in permafrost?

• A)Most plants and animals evolved in Siberia
• B)It is easier to take solid core samples
• C)The enzymes that make DNA are still active in the cells
• D)The freezing temperatures preserves the DNA
• E)Areas with permafrost are older than other parts of the world, allowing scientists to collect samples back 1.5 to 2 million years

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