Question from developmental biology (5 points). During Drosophila development, RNAs for the anterior and posterior genes Bicoid and Nanos…

Question from developmental biology
(5 points). During Drosophila development, RNAs for the anterior and posterior genes Bicoid and Nanos respectively play key roles. Sketch the gradient of the Bicoid protein in an anterior to posterior direction:
What is a major function of Bicoid? Sketch the gradient of the Nanos protein from anterior to posterior direction.
What is a major function of Nanos? Name one gene responsible for the localization of Nanos to the posterior.