Opsin evolution: update blog

This cluster of web articles on opsin evolution is updated almost daily. Because those changes are hard to track systematically, this simple blog of significant changes may be helpful.

• Introduction to the opsin classifier and curated sequence collection
• A massive anchored alignment of 119 opsins
• Tutorial on gene extraction from trace reads
• Species with genome projects and their photoreceptors
• Color vision in the platypus and ancestral mammal
• Tracking significant updates
• Informative coding indels (under development)
• Intron gain and lost (under development)
• The photoreceptor fossil record (planned)
• Subscholarly opsin books and ill-considered evolutionary inference (planned)

28 Nov 07: added Xenoturbella and Convoluta section to basal key critters, no opsins available
28 Nov 07: upgraded key critters with treatment of Saccoglossus
28 Nov 07: found first hemichordate opsin, put methods into detailed tutorial
28 Nov 07: received copywrite permissions for use of handdrawn invertebrate eyes illustrations
28 Nov 07: added jump navigation to key critters as article is getting fairly long

27 Nov 07: added scallop Go opsins from an important historic study
27 Nov 07: reorganized curated sequences into deuterostome, ecdysozoa, and lophotrochozoa blocks sorted by receptor type.