Cross-table 08: Dark,

inheritance dominant

mating hen 1
0-1 dark
(2-factors)
hen 2
0-1 dark
( 1-factor)
hen 3
0-1 wildtype
(-)
cock 1
1-0 dark
(2-factors)
1-0 dark (2-factors)
0-1 dark (2-factors)
1-0 dark (2-factors
1-0 dark (1-factor)
0-1 dark ( 2-factors)
0-1 dark (1-factor)
1-0 dark (1-factor)
0-1 dark (1-factor)
cock 2
1-0 dark
(1 factor)
1-0 dark (2-factors)
1-0 dark (1-factor)
0-1 dark (2-factors)
0-1 dark (1-factor)
1-0 dark (2-factors)
1-0 dark (1-factor)
1-0 wildtype (-)
0-1 dark (2-factors)
0-1 dark (1-factor)
0-1 dark (-)
1-0 dark (1-factor)
1-0 wildtype (-)
0-1 dark (1-factor)
0-1 wildtype (-)
cock 3
wildtype
(-)
1-0 dark (1-factor)
0-1 dark (1-factor)
1-0 dark (1-factor)
1-0 wildtype (-)
0-1 dark (1-factor)
0-1 wildtype (-)
1-0 wildtype (-)
0-1 wildtype (-)

Comment:
The dark factor is dominant over the wildtype. So there are no splits. No split cocks, no split hens. The colour variety has a single (1-factor) or double (2-factors) dark factor.
The best combination is cock 1 x hen 1. The next best is cock 2 x hen 1 and cock 1 x hen 2.
But all the other combinations of 1-factor birds has a darkening effect on the plumage. In the cross-table it is recognisable how fast a dominant mutation factor can spread in a population.

Abbreviations:
(2-factors) = double dominant factor
(1-factor) = single dominant factor
Colour:
dark yellow, best combination
bright yellow, next best combination.

index menu

Copyright 2004 by Bob Fregeres

E-mail: fregeres@bourkes-parakeet.nl