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.
Calories in Peanut Butter. The calories in one tablespoon of peanut butter vary by variety and brand. Creamy and crunchy varieties are the common types of unflavored peanut butter. One tablespoon of creamy or crunchy peanut butter ranges from 70 to 100 calories. Keep in mind that the nutrition label for peanut butter declares one serving of peanut butter to be two tablespoons, so you must divide the nutrition label numbers by two to calculate the nutrition of one tablespoon.