To nobody's surprise, therefore, though the mutant fly is capable of learning things, it forgets them within minutes.

ECONOMIST: Memory formation

When geneticists replaced one of the mutant fly genes by its homologous mouse gene the fly developed normal flies' eyes and not mouse eyes.

ECONOMIST: Genetic science

This is a rare brain disorder that is caused by an autoimmune response which destroys the human equivalents of the ion channels that are affected in the mutant fruit fly.

ECONOMIST: Memory formation