1 Copy number variation (CNV) is a type of mutation where large chunks of DNA are inserted, repeated or lost. 2  These regions of DNA can be between 10,000 and 5,000,000 bases long. 3  Duplication of genes. 4  When there is an increase in the number of copies of a gene. 5  Deletions of large regions of the chromosome.
Microwaves are basically small (micro) waves of radio frequency energy. It cooks the food by vibration (waves) creating friction from within, thus creating heat. This is why it cooks from the inside-out as opposed to heat which must be absorbed from the outside-in. Microwaves are high energy electromagnetic waves.
In a bowl of soup, you'll get pockets of boiling hot broth alongside barely warm veggies. You might also see steam rising from the surface and think your food is done, only to get back to your desk and realize it's still stone cold in the middle. The rotating tray in most microwaves helps, but doesn't do the entire job. Stirring helps to distribute the heat and make sure the food is re-heating evenly. Going in short intervals gives you more control and lets you to check the food's progress so it doesn't overcook.