From this, it is readily seen that any insertion or deletion will change the triplet groups, and so may have major effects on the amino acids coded for. This is called a frame-shift mutation. Frame-shift mutations almost always result in nonfunctional proteins.
KEEP IT SIMPLE. 1  Use only one message per slide. 2  If you have more than one message, add a slide. 3  Limit the amount of text on each slide-no one wants to read a JAMA article during your presentation. 4  Use only elements that add to the content of the message. 5  Use graphics that clearly support your message.
However, everything has long since changed. Widescreen is now the standard presentation format, and since the 2013 version of PowerPoint, the default slide size has been set to a 16:9 widescreen aspect ratio. However, you can still switch back to the 4:3 setting, or even set your own custom size.