Microsoft's spreadsheet program can do way more than you might imagine. These are the hacks and tricks you need to know.

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

This video explains how the dollar sign is used in Excel formulas to control whether cell references stay fixed or change ...

The divergence of new genes and proteins occurs through mutations that modulate protein function. The effects of these mutations are pleiotropic, thus imposing trade-offs between selection pressures ...