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 nose color, the frequencies of black and brown noses in the wolf population are likely to remain stable over generations. The dominant allele for black noses may not necessarily increase in frequency if there is no selective pressure favoring it. Thus, the proportions of each color will likely remain similar to their current state.
