Single gene region on X chromosome drives redback spider's mating somersault
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·1 viewsNew research has identified a specific genetic region that controls the elaborate somersaulting behaviour male redback spiders perform during mating. This trait, which involves males flipping toward a female's fangs, is inherited via the X chromosome and found to be recessive. Scientists used experimental hybrid spiders to confirm the X-linked, recessive nature of the somersault behaviour. In contrast, abdominal narrowing in these spiders appears to be shaped by multiple genes working alongside environmental factors. The findings challenge conventional assumptions about how complex behavioural and physical traits are genetically determined.
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