Overview: Devoted to the evolution of Hox genes and Hox complexes, in relation to animal evolution.Discusses function of the Hox genes at the organism level.Biological function of the Hox genes in the BilateriaIn his 1894 book, Materials for the Study of Variation, William Bateson coined the term Homoeosis with the following prose: The case of the modification of the antenna of an insect into a foot, of the eye of a Crustacean into an antenna, of a petal into a stamen, and the like, are examples of the same kind. It is desirable and indeed necessary that such Variations, which consist in the a
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