Provided is a pedigree showing the inheritance of the inheritance of the polydactyl trait and the clear shapes show individuals not affected. Use the letters P and p to refer to alleles for the trait?

Here is the pedigree:

- Individuals with the trait: PP or Pp
- Individuals without the trait: pp

Please note that the trait is dominant, as indicated by the presence of the trait in individuals with at least one P allele.

1. The affected individuals are represented by filled-in shapes, so they must have at least one copy of the p allele.
2. The unaffected individuals are represented by clear shapes, so they must have two copies of the P allele.
3. The parents of the affected individuals must have at least one copy of the p allele, so they must be Pp.
4. The parents of the unaffected individuals must have two copies of the P allele, so they must be PP.
5. The offspring of two Pp parents can be PP, Pp, or pp.
6. The offspring of a PP parent and a Pp parent can only be PP or Pp.
7. The offspring of a Pp parent and a pp parent can only be Pp or pp.

Therefore, the pedigree can be filled in as follows:

```
Pp x Pp
|
Pp Pp pp
```