DNA Sibship Test - Sibling Genetics. Understanding Sibling Genetics. Each person is made up of billions of cells, and most of the cells in our bodies contain a full set of genetic information in the form of DNA (deoxyribonucleic acid). DNA acts much like a genetic blueprint, dictating how we look and develop.
The calories also vary depending on the type of bread, peanut butter and jam you select for your sandwich. A sandwich made with 2 slices of whole-wheat bread, 2 tablespoons of peanut butter and 1 tablespoon of jam comes to about 385 calories. The type of bread you use affects the calories in your sandwich.
That is, two tablespoons of peanut butter, the amount in an average sandwich, provides about 7 grams of protein. In comparison, the calorie equivalent of turkey in a sandwich offers about 20 grams of protein. Athletes who weigh 140 pounds may need 70 to 100 grams protein per day; 200-pound athletes, 100 to 150 grams. For 100 grams of protein, you'd have to eat the whole jar of peanut butter! Unlikely!