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

Melatonin and Serotonin

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Thyroxine and Triiodothyronine

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Estrogen and Progesterone

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Cortisol and Cortisone

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Solution

The correct option is A Melatonin and Serotonin
Both Melatonin and Serotonin are amino acid derived hormones and are biochemically derived from tryptophan.
Similarly, Thyroxine and Triiodothyronine are amino acid based hormones that are derived from tyrosine.
All the other hormones are steroid based.

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Similar questions

The amino acid tyrosine is the precursor for the synthesis of
(i) Melatonin
(ii) Triiodothyronine
(iii) Thyroxine
(iv) Calcitonin

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