Chapter 25, Problem 6TYU

Summary Introduction

Introduction: Over three decades, the expression of Hox genes generates the changes in evolutionary diverse organisms. Thus, Hox genes play a major role in the evolution of novel morphological forms. Hox genes are homeotic genes containing transcription factors that provide the positional information. The clusters of Hox genes control the polarity of the embryo, anterior–posterior body axis formation, and body segmentation in embryogenesis of all species. Thus, Hox controls the ancestral lineage that leads to the evolution of novel morphological changes in all species.