In progeny obtained by crossing of two palomino trout 8 fish had golden color, 42 fish were palomino and 18 fish had wild-type color. Compare...

In progeny obtained by crossing of two palomino trout 8 fish had golden color, 42 fish were palomino and 18 fish had wild-type color. Compare observed segregation with theoretic ratio 1:2:1. What is the value of Chi square? Is the difference between observed and expected segregations statistically significant?