Answer:
Because in the Hardy-Weinberg equilibrium, allele and genotype frequencies are supposed to remain constant, and in this population, they aren’t as some wolves have white coats and others don’t. This is caused by an allele that some wolves have and some don’t. The population’s second reason for not being in Hardy-Weinberg equilibrium is that some wolves have the advantage of having white fur, thus leaving the possibility for natural selection to take place.
I think this is right - hasn't been graded yet