Q4.9. The allele for black noses in wolves is dominant over the allele for brown noses. There is no known selective advantage for one nose color over another in wolves. If this remains true, which of the following statements is most likely true about the change in wolf nose colors over many generations? A. Black noses will become more common than they are now. B. Black noses will stay about the same frequency as now. C. Black noses will become less common than they are now. D. Brown noses will disappear after enough generations pass.

Answer: B. Black noses will stay about the same frequency as now.

Explanation: Since there is no known selective advantage for either black or brown noses, the frequencies of these alleles in the population will likely remain stable over generations. The dominant allele for black noses does not provide a survival benefit that would lead to an increase in its frequency, nor does the recessive allele for brown noses face selective pressure that would lead to its disappearance. Therefore, the frequencies of both alleles should remain relatively constant.