Figure 9.14. Schematic representation of the experiments demonstrating that the bicoid gene encodes the morphogen responsible for head structures in Drosophila.

Figure 9.14

Schematic representation of the experiments demonstrating that the bicoid gene encodes the morphogen responsible for head structures in Drosophila. The phenotypes of bicoid-deficient and wild-type embryos are shown at the sides. When bicoid-deficient embryos are injected with bicoid mRNA, the point of injection forms the head structures. When the posterior pole of an early-cleavage wild-type embryo is injected with bicoid mRNA, head structures form at both poles. (After Driever et al. 1990.)

From: The Origins of Anterior-Posterior Polarity

Cover of Developmental Biology
Developmental Biology. 6th edition.
Gilbert SF.
Sunderland (MA): Sinauer Associates; 2000.
Copyright © 2000, Sinauer Associates.

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