In Drosophila, tissues along the dorso-ventral axis of the embryo turn on different embryonic genes in response to a nuclear concentration gradient of the maternally derived Dorsal transcription factor. A. Explain in a few sentences how the concentration of Dorsal protein in the nuclei of the fly embryo becomes graded from high-to-low as one moves from the ventral to the dorsal side of the embryo.

Hurry i need your (100 points) 1) what are the responsibilities of the region of the brain highlighted below? (picture located below) the highlighted portion is at the rear base of the brain, behind the brain stem. regulating homeostasis, hunger and eating, thirst and drinking, and many other functions of basic survival. coordinating movement and balance by using information from sensory nerves, including hand-eye coordination. controlling voluntary body movements, processing information from sense organs, thoughts, and learning abilities. regulating important involuntary bodily functions such as blood pressure, heart rate, breathing, and swallowing. 2)which of the following systems or structures is correctly paired with its function? neurons - brain cells that control thoughts, calculations, and memory cerebral cortex - portion of the brain that controls involuntary body movement peripheral nervous system - carries impulses to and from the central nervous system central nervous system - carries information from the nerves to the muscles and glands