Evolution of the Tas1r2 Gene in Felines

Timeline of Sweet Taste Receptor Mutation

Feline Evolution
Million Years Ago (MYA)
30 MYA
25 MYA
20 MYA

30-20 MYA

Divergence of the Felidae lineage from other carnivores

Tas1r2 Mutation

247-base pair deletion in exon 3, creating a non-functional sweet taste receptor