ScienceDaily: Biotechnology News |
| Study of skates and sharks questions assumptions about 'essential' genes Posted: 15 Dec 2011 11:16 AM PST Biologists have long assumed that all jawed vertebrates possess a full complement of nearly identical genes for critical aspects of their development. But new research shows that elasmobranchs, a subclass of cartilaginous fishes, lack a cluster of genes, HoxC, formerly thought to be essential for proper development.  |
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