Mark the incorrect statement about pedigree analysis.

In human genetics, pedigree study provides a strong tool, which is utilised to trace the inheritance of a specific trait.

The family pedigree of Queen Victoria shows a number of colourblind descendents as she was a carrier of the disease.

Inheritance of traits can be understood though pedigree charts that show the family history of a trait since controlled crosses are not possible in case of human beings.

Inheritable mutations can be studied by generating a pedigree chart of a family.