Step 1: Understanding the Concept
Genomics is the study of whole genomes: their sequencing, mapping and gene function.
Step 2: Real applications
It is used to develop transgenic crops with desirable traits, to add new genes to microbes to make enzymes and biofuels, and to provide genetic markers for forensic analysis.
Step 3: Find the odd one
Pedigree analysis follows a trait through the generations of a family using phenotypes. It is a tool of classical genetics, not genomics.
Final Answer:
Pedigree analysis of cats, dogs, horses and humans is not an application of genomics.
\[ \boxed{\text{(A) }\text{It is used in pedigree analysis of cats, dogs, horses and human.}} \]