Answer:
Let us consider the genes for black individual to be BB.
Let us consider the genes for bluish gray individuals to be BW.
The cross will be:
B W
B BB BW
B BB BW
The results show that there is a 50% probability that the offsprings produced will have black colour. There is also a 50% chance that the offsprings produced will have bluish graycolour.
The genotypic ratio for black individual : bluish gray individual will be 2:2.
The phenotypic ratio for black individual : bluish gray individual will be 2:2.