Solving pedigrees

Here's a good warm-up exercise.  You should be able to determine all possible inheritance patterns for these pedigrees.  For now, ignore whether they are autosomal or sex-linked.  Determine whether the inheritance is consistent with a dominant or a recessive allele.  You may assume that there is a simple Mendelian interaction here:  the allele that causes the special phenotype (shaded symbols) is either completely recessive or completely dominant to the wild-type (unfilled symbols).

Pedigree 1:

Solution for the pedigree above.  (Click on the YouTube logo at the bottom right if you want to be able to open a full-screen version).

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Pedigree 2:

The solution for Pedigree 2 is below (same notation regarding full-screen view).