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Common wall lizard

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Common wall lizard

A common wall lizard individual exhibiting orange coloration. The presence of orange is explained by variation in the SPR gene, which is a gene in a highly conserved pathway that is linked to the production of neurotransmitters like serotonin and dopamine.
Guillem Pérez i de Lanuza
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Guillem Pérez i de Lanuza
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A wall lizard may look like another well camouflaged reptile but in reality this species presents a stunning set of well distinct morphs that differ in the coloration of their throat and bellies. Credits: Guillem Pérez i de Lanuza  and Javier Ábalos.

Two genes explain variation in colour and behaviour in the wall lizard

How are reptiles capable of generating such a diversity of bright colors? And how is it possible that within a single population of the same species, different individuals exhibit strikingly different coloration patterns? A team of scientists reveal two genes implicated in yellow to red pigmentation in reptiles, and demonstrate that these “pigmentation genes” also affect behaviour and other traits

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