.... e-mail: [email protected] 19 2 2007 © The Company of Biologists Limited 2007 2007 non-coding RNA intron regulation The developmental ontogeny of a human from an embryo to a fully formed adult involves the construction of an organism of approximately 100 trillion...

... site to the counterion in vertebrate opsins is occupied by an aromatic amino acid. An intron is present that splits codon 107, in contrast to the intronless rhodopsin gene in two species of myopsid squid. A spectral tuning model involving substitutions at only three amino acid sites is proposed...