In a population where the ratio of two phenotypes (in this case, brown fur and white fur) is 1:1, it indicates that both traits are equally represented. Therefore, the frequency of the white fur trait can be calculated as follows:
Since the ratio is 1:1, the total frequency for both phenotypes is 100%, and they are equally divided:
- Frequency of brown fur = 50%
- Frequency of white fur = 50%
Thus, the frequency of the white fur trait in the rabbit population is 50%.