A research had 15 pure wild mice which were Brown and all were tamales .they were all mated with a male called bob. all offspring were brown. these were then crossed among themselves with following results: 293 brown and 115 white 1. determine the colour of the bob
2. determine which colour is dominant
3 work out the ratio of brown to white in grandchildren
4. if the researcher crosses two of the white grandchildren determine the colour of there offspring
use the punnet square to work out your answers​