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I think the data is being looked at in the wrong way. Stop looking back from the child to the parent, and instead look in the predictive direction.

List the number of fathers with each condition and then for each father group list the number of resulting children by condition. Do the same for mothers, and if possible, the father/mother cross. One of the problems is that the inherited percentages are low so your results have a high variance relative to their underlying mean.

I think all of the genetic traits should be included as well.