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.
While air-popped popcorn without salt or oil is low in calories and fat, you still need to limit your serving size. A 3-cup serving is reasonable for a snack, but if youâre voracious, a double serving is okay too. You need to use 1 1/2 tablespoons of kernels to make 3 cups of popped popcorn. One 3-cup serving of air-popped popcorn has 93 calories, 1 gram of fat, 3.5 grams of fiber and 2 milligrams of sodium.