Sea Spiders Missing Key Body Part and Gene, Study Finds
TL;DR
Scientists sequenced the genome of the knotty sea spider and discovered that it lacks a key Hox gene responsible for abdomen development, which may explain why sea spiders have no abdomen and store vital organs in their legs, shedding light on their unique evolutionary path.
Sea Spiders Lack a Key Body Part and a Missing Gene Could Explain Why The New York Times
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