Which of the following pairs of receptors illustrates convergent evolution?

/in /by

Which of the following pairs of receptors illustrates convergent evolution?

a) the D2 and D3-dopaminergic receptor subtypes

b) the D4 and D5-dopaminergic receptor subtypes

c) the β1 and β2-adrenoceptor subtypes

d) the M3 and M5-muscarinic receptor subtypes

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