What are your favorite examples of genes that are preserved across different species (say worms/flies to mice to humans) that do interesting brain-related things?
The gene whose mutation leads to Huntington's disease (Huntingtin) is one example. Others?
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@NicoleCRust
Conserved toll signalling in C elegans beyond redeployed from traditional innate immunity in arthropods & vertebrates to expression in the brain mediation behavioural pathogen avoidance in nematodes
@cyrilpedia
Ancient evolutionarily but new to me. Thanks so much!