stapedia is a lethal allele that is o dominant. Individuals with this it must be heterozygous (Aa) cause the homozygous condition A) is lethal. This is not a sex-linked it. Wild-type flies do not carry the

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Learning and memory

Learning is defined as a relatively permanent and irreversible adaptive change in behavior. It always results from experience. The ability of an organism to store and recall the effects, sensations, and knowledge gained through learning and experience is called memory.