Origin of the spider's head
Article Abstract:
Structure comparisons of heads of different classes of arthropod have often been controversial. Studies based on the expression of developmental genes by Damen and colleagues and Telford and Thomas, provide evidence of unexpected homologies. The homeotic (Hox) genes were studied and the identification and expression of such genes in two different Chelicerata, showed that expression of Hog genes in the prosoma of chilcerates is similar to homologous gene expression in the heads of other arthropods.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
The nitrogen fix
Article Abstract:
Research describing the origins of metabolically usable nitrogen is presented. In particular the possibility of a sharp fall in the rate of abiotic nitrogen fixation by lightning in the early history of the earth is investigated.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Foreshadowing the glacial era. The great ice mystery. Respiration in the balance
- Abstracts: In search of the whales' sisters. Head start. Paying for sex is not easy
- Abstracts: Basis of hepatitis delta virus disease? New tool for Swiss army knife. Moving targets
- Abstracts: Pissing their lives away: how the drug industry harms horses. New (veg) kids on the block: lettuce lunches
- Abstracts: Capillary flow as the cause of ring stains from dried liquid drops. Swimming in flatsea