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

Question

Quizplus · Accepted Answer

Hox genes often produce transcriptional factors that regulate the expression of other genes during development. While cell-surface molecules and maternal cytoplasmic signals are important in developmental regulation, they are not specifically produced by Hox genes. mRNA processing factors are also important, but are not typically associated with Hox gene action.

Gene Expression in Developing Organisms Is Regulated on Several Different