If the expression of every gene depends on a set of transcription regulators, then the expression of these transcription regulators must also depend on the expression of other transcription regulators, and their expression must depend on the expression of still other transcription regulators, and so on. Cells would therefore need an infinite number of genes, most of which would code for transcription regulators?

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots