The formation of melanin from simpler components, including tyrosine.

The chemical reactions involving any of a group of physiologically important biogenic amines that possess a catechol (3,4-dihydroxyphenyl) nucleus and are derivatives of 3,4-dihydroxyphenylethylamine.

A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.

The formation of dopamine (3,4-dihydroxyphenylethylamine) from L-tyrosine, via the metabolic precursor 3,4-dihydroxy-L-phenylalanine (L-dopa). Dopamine is a catecholamine neurotransmitter and a metabolic precursor of norepinephrine and epinephrine.

The chemical reactions involving indolalkylamines, indole or indole derivatives containing a primary, secondary, or tertiary amine group.

The formation from tryptophan of serotonin (5-hydroxytryptamine), a monoamine neurotransmitter occurring in the peripheral and central nervous systems, also having hormonal properties.

The process whose specific outcome is the progression of the embryo over time, from zygote formation until birth. As in, but not restricted to, the vertebrates (Vertebrata, ncbi_taxonomy_id:7742).

The chemical reactions involving tyrosine, an aromatic amino acid, 2-amino-3-(4-hydroxyphenyl)propanoic acid.

Morphogenesis, during the embryonic phase, of a tissue or tissues that work together to perform a specific function or functions. Morphogenesis pertains to processes by which anatomical structures are generated and organized. Organs are commonly observed as visibly distinct structures, but may also exist as loosely associated clusters of cells that work together to perform a specific function or functions.

The breakdown into simpler components of tyrosine, an aromatic amino acid, 2-amino-3-(4-hydroxyphenyl)propanoic acid.

The chemical reactions involving valine, 2-amino-3-methylbutanoic acid.

The process whose specific outcome is the progression of the gut over time, from its formation to the mature structure. The gut is the region of the digestive tract extending from the beginning of the intestines to the anus.