A
Inheritable mutations can be studied by generating a pedigree chart of a family.
B
The family pedigree of Queen Victoria shows a number of colourblind descendents as she was a carrier of the disease.
C
In human genetics, pedigree study provides a strong tool, which is utilised to trace the inheritance of a specific trait.
D
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.
Solution:
The family pedigree of Queen Victoria shows a number of haemophilic descendents as she was a carrier of the disease.
