Gene Expression in Developing Organisms Is Regulated on Several Different

Multiple Choice

Gene expression in developing organisms is regulated on several different levels. In many developing animals, regulation of gene expression is influenced by the action of Hox genes. Which of the following regulatory elements is produced by many Hox genes?

A) transcriptional factors
B) cell-surface molecules for cell-cell interactions
C) signals from maternal cytoplasm, such as bicoid
D) mRNA processing factors