Punnett Square

A Punnett Square is a type of diagram (2 x 2 square) that can be used to predict the outcome of a breeding experiment. Many of us have used these in science classes to predict the chances of different physical occurrences (blood types, eye color, hair color, etc.) This type of chart works for estimating the likelihood of inheriting one feature when there are two chances (blue eyes or brown eyes, blond hair or brown hair, etc.).

https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/Punnett_Square.svg/1200px-Punnett_Square.svg.png