Now Reading: Male redback spider somersault controlled by single X-chromosome region
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Male redback spider somersault controlled by single X-chromosome region
Male redback spider somersault controlled by single X-chromosome region
Times of India reports that male Australian redback spiders' self-sacrificial somersault during mating, which places their abdomen near the female's fangs, is controlled by a single genetic region on the X chromosome,…
The Story in Brief
Times of India reports that male Australian redback spiders' self-sacrificial somersault during mating, which places their abdomen near the female's fangs, is controlled by a single genetic region on the X chromosome, according to a study in Biology Letters led by Kardelen Özgün Uludağ. The behaviour, though physically complex, challenges the idea that such traits require many interacting genes.
Researchers bred redbacks with New Zealand katipo spiders, which lack the somersault, and analysed 104 male offspring. Only males with the specific X-linked region performed the somersault, while abdominal narrowing, another trait, was inherited independently. The findings suggest that even complex behaviours can have a simple genetic foundation.
The Indian Opinion
The popular notion that complex animal behaviours must be orchestrated by many genes takes a hit. This study shows a single X-chromosome region can drive a life-or-death acrobatic display. But readers should resist oversimplifying: abdominal narrowing, also crucial for mating, has a multi-gene basis. The real test will come when researchers identify the exact gene and see if it controls behaviour in other Latrodectus species. How many other apparently intricate behaviours might have similarly simple roots?
Source: timesofindia.indiatimes.com
This story was synthesised by AI from the source linked above.
