C, because alleles are alternative forms of a gene that arise from mutation.
The display communicates that the males are from their own species and that they may not be from the same species group as the females.
Anamalia, Chordata, Mammalia, Carnivora, Canidae, Canis and Canis lupus.
Because it can cause serious infections in the lungs, blood and our brains...It may also cause urinary tract and infections in wounds.
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