Answer:
Frequency of individuals with recessive trait(dd) %
Explanation:
Please see the attached.
In the image it is clear that there are total mouse out of which are dark colored.
Since dark color allele is dominant, these dark colored mouse will have genotype either DD or Dd
The individuals with genotype "dd" will be of light color.
Number of light colored mouse
Frequency of individuals with recessive trait(dd)
%