The HACNS1 region from all species studied produced expression in the eye, ear, and pharyngeal arches, whereas only the human HACNS1 region produced significant expression in the limb bud. Explain how gene expression can be differentially regulated in different tissues.

Describe how an electric generator works

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

Glucose is broken down in different ways, both in the presence and in the absence of oxygen. using the table for reference, what major products are formed in each reaction set?