Yes, if there is a visual animal that is a parent all animals will be at least 100% het.
If both parents are 100% het, offspring would be 66% het.
Example, 100% het pied x 100% het pied
1/4 Pied
1/4 normal het Pied
1/4 normal het Pied
1/4 normal
Of the non-visual animals, there is a 2/3 chance (or 66%) that each animal is carried the pied gene.
If one parent is 100% het, offspring would be 50% het.
Example, 100% het Albino x normal
1/2 normal het albino
1/2 normal
Of the non-visual animals, which in this case is the entire clutch, there is a 1/2 chance (or 50%) that each animal is carrying the Albino gene.
Hope that helps! I'm at work and couldn't find links with Punnett Squares at the moment.
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