Ans: D. a and b are correct
Which of the following may help to explain why there are no populations in which newts produce so much toxin that they kill all snakes, but there are several populations where snakes are completely unaffected by the toxicity of newts?
A. a change in a single amino acid can result in resistance against the toxin
B. a series of mutations are required to make newts more toxic
C. snakes can learn to avoid newts
D. a and b are correct
Biology & Microbiology
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