Question 87

(Multiple Choice)

Use the following information to answer the questions below.
A researcher has arrived at a method to prevent gene expression from Drosophila embryonic genes.The following questions assume that he is using this method.
-Which of the following are maternal effect genes that control the orientation of the egg and thus the Drosophila embryo?


A)homeotic genes
B)segmentation genes
C)egg-polarity genes
D)morphogens
E)enhancer genes

Answer