Question

A black hybrid mouse is crossed with a pure brown mouse to produce a total of 24 young ones. Which of the following result is most likely to be correct
A) 13 black males and 11 black females
B) 11 brown males and 13 brown females
C) 8 black males, 10 black females, 3 brown males, 3 brown females
D) 5 black males, 6 brown males, 7 black females, 6 brown females

Answer 1

5 black males, 6 brown males, 7 black females, 6 brown females 
When a hybrid black mouse is crossed with pure brown mouse (recessive character), the offspring produced would be black and brown in equal proportions, the sex of the mouse has no role in this inheritance.

Answer 2

When a black hybrid mouse and a pure brown mouse is crossed to produce a total number of 24 young one, then five black males, six brown males, seven black females and six brown females are born. Because the offspring produced by the black and brown mouses would be equal in proportion as the mouse's sex does not play a role in this heritage. In total there will be birth of 5 + 7=12 black mouses and 6 + 6=12 brown mouses.