# Male redback spider somersault controlled by single X-chromosome region 2026-08-14T21:19:46+00:00 | World & Diplomacy | Indian Opinion Desk Corroboration: 1 independent outlet 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. ## Coverage - timesofindia.indiatimes.com Tags: Australia, Katipo spider, Redback spider Canonical: https://indianopinion.org/male-redback-spider-somersault-controlled-by-single-x-chromosome-region/ License: Summary and commentary (c) Indian Opinion, reusable with attribution. Facts belong to the linked sources. Cite: https://indianopinion.org/male-redback-spider-somersault-controlled-by-single-x-chromosome-region/#story-in-brief Review state: restored archive article, accurate at time of publication, not offered to search indexes.