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Question

What causes mutations?

A
Colchicine
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B
Cosmic rays
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C
Gamma rays
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D
Crossing over
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Solution

The correct option is D Gamma rays
Gamma radiation is form of ionizing radiation. That means it has the capacity to strip electrons from atoms or molecules. When our cells are exposed to ionizing radiation, cellular structure structures are damaged or destroyed. The most important structures would be our DNA which controls how cells grow, function, and reproduce. DNA mutations (changes in the DNA sequence) can result from ionizing radiation or from the cell trying to repair radiation damage.

So, the correct answer is 'Gamma rays'.

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