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) signals from maternal cytoplasm, such as bicoid mRNA b) processing factors c) cell-surface molecules for cell—cell interactions d) transcriptional factors

d) transcriptional factors

Explanation:

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. Transcriptional factors regulatory elements is produced by many Hox genes.

Transcription factors are proteins that help turn specific genes "on" or "off" by binding to nearby DNA and Hox genes help lay out the basic body forms of many animals, including humans, flies, and worms. They set up the head-to-tail organization.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain