Splicing. Eukaryotic genes are often interrupted by sequences that do not appear in the final RNA. The intervening sequences that are removed are called introns. The process by which introns are removed is referred to as splicing.The sequences remaining after the splicing are called exons. All of the different major types of RNA in a eukaryotic cell can have introns.plicing. Eukaryotic genes are often interrupted by sequences that do not appear in the final RNA. The intervening sequences that are removed are called introns. The process by which introns are removed is referred to as splicing.
Plain Air-Popped Popcorn Air-popped popcorn, on its own, doesn't contain many calories and is also low in fat and carbohydrates. A 3-cup serving of white, air-popped popcorn has 92 calories, 1 gram of fat and 1 milligram of sodium, according to the U.S. Department of Agriculture. The snack also has 2.9 grams of protein, 18.7 grams of carbs and 3.6 grams of dietary fiber.
Adding unhealthy toppings to your air-popped popcorn can quickly turn this healthy snack into an unhealthy one. Salt and butter are common toppings for popcorn, but they can wreak havoc on your health if consumed in abundance. One tablespoon of butter adds 102 calories and 11 grams of fat to your serving of popcorn. Adding 1/4 teaspoon of salt to your bowl of popcorn adds 600 milligrams of sodium to your daily intake.