two.4 mya Along with the emergence of A. microta.[60][sixty one] Genome sequencing of the giant panda indicates which the dietary switch could have initiated with the loss of the only umami flavor receptor, encoded by the genes TAS1R1 and TAS1R3 (often known as T1R1 and T1R3), ensuing from two frameshift mutations within the T1R1 exons.[50] Umami flavor corresponds to high levels of glutamate as present in meat and can have Therefore altered the foodstuff preference of the giant panda.
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