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.
Peanut Butter Sandwich Calories Calories will vary based on the types of ingredients chosen. Chunky and smooth peanut butter will have slightly different ingredients and nutritional content, and there are often large differences in the sugar and salt content between different brands of peanut butter.