I found this in an magazine and thought it was intereresting. This is the closest to being exact in very large numbers. Also recessive genes may stay hidden for a very long time so that may affect your results.
Crossing Black and White Jersey
Giants
Heterozygous means it carries
two genes
Homozygous means it carries only one
gene
Homozygous Black Cock * Homozygous White Hen =
100 % Heterozygous offspring
Heterozygous Black Cock * Heterozygous White Hen =
25 % Homozygous dominant, 50% Heterozygous offspring
and 25% Homozygous recessive
Heterozygous Cock * Homozygous Black Hen =
25 % Heterozygous, 50% Homozygous dominant, 25% Homozygous recessive offspring
Heterozygous Cock * Homozygous White Hen =
50 % Heterozygous offspring 50 % Homozygous recessive
Black and Blue
Black Cock * Blue Hen =
50% blue, 25% black and 25% blue-splash chicks
Blue Cock * Black Hen =
50% blue and 50% blue chicks
Blue Cock * Blue-splash Hen =
50% blue and 50% blue-splash chicks
Black Cock * Blue splash Hen =
100% blue chicks
Black Cock * Black Hen =
100% black chicks
Blue splash Cock * Blue splash Hen =
100% blue splash chicks
Crossing Black and White Jersey
Giants
Heterozygous means it carries
two genes
Homozygous means it carries only one
gene
Homozygous Black Cock * Homozygous White Hen =
100 % Heterozygous offspring
Heterozygous Black Cock * Heterozygous White Hen =
25 % Homozygous dominant, 50% Heterozygous offspring
and 25% Homozygous recessive
Heterozygous Cock * Homozygous Black Hen =
25 % Heterozygous, 50% Homozygous dominant, 25% Homozygous recessive offspring
Heterozygous Cock * Homozygous White Hen =
50 % Heterozygous offspring 50 % Homozygous recessive
Black and Blue
Black Cock * Blue Hen =
50% blue, 25% black and 25% blue-splash chicks
Blue Cock * Black Hen =
50% blue and 50% blue chicks
Blue Cock * Blue-splash Hen =
50% blue and 50% blue-splash chicks
Black Cock * Blue splash Hen =
100% blue chicks
Black Cock * Black Hen =
100% black chicks
Blue splash Cock * Blue splash Hen =
100% blue splash chicks