BILD 3 Lecture Notes - Lecture 17: Hox Gene, Ultrabithorax, Dhow
Document Summary
Development is the process by which a fertilized embryo becomes an adult. It"s also what connects the organism"s genotype with its phenotype. When do genes function to shape the beaks of different birds: at fertilization. The developmental mechanisms that shape organisms an dhow those mechanisms change over evolutionary time are now beginning to be understood. How do flies get the correct number of wings: dragonflies: order odonota - 4 wings. Drosophilia mutation ultrabithorax causes a duplication of the segment containing wings. Dar(cid:449)in"s finches re(cid:448)isisted : beak lengeth and thickness are independently controlled by what genes, bone morphogenetic protein (bmp4) expression associates with beak thickness, calmodulin (cam) expression associates with beak length.
