In the figure above the structure indicated by a is a and t

In the figure above, the structure indicated by (a) is a _________ and the structure indicated by (b) is a/an __________ .

a)switch, activator

Controls Controls expression expression in pelvis Protein-coding region in jaw (a) (b) (c) Transcription and translation Pitx1

Solution

d) gene, switch

Regulatory switches are regions of DNA that can be bound by a particular activator or repressor in a sequence-specific manner. It can either be near the coding region or many megabases away. The switch controls the transcription of genes in different tissues and at different times in development.