The amino acid Tryptophan is the precursor for the synthesis of:

(a) Cortisol and Cortisone
(b) Melatonin and Serotonin
(c) Thyroxine and Triiodothyronine
(d0 Estrogen and Progesterone

Anurag Mishra Professor Asked on 2nd May 2016 in Biology.
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Answer: (b) Melatonin and Serotonin 

Anurag Mishra Professor Answered on 4th May 2016.
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