A biology student got an unexpected lesson recently, when she found out about her mother’s infidelity through a blood-type discussion given in class.
The biology class, given at California State University, was about the characteristics of blood-types and how they are passed down from generation to generation.
They were practising using a Punnett square, which is a diagram that is used to predict an outcome of a particular cross or breeding experiment. The student was reportedly confused as to why her blood-type was AB when her mother’s was A and her father’s O. This is an impossible occurrence, as the A and B genes are dominant and the O gene is recessive. So, as in this example, if an O gene is paired with an A gene, the blood type will be A.The teacher, sure there was a mistake somewhere, asked the student to go home and confirm that all blood-types were correct. She did, and came back with an incredible revelation that took incredible courage to tell to the entire class.
The entire episode was
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A Punnett square is a diagram that is used to predict the outcome of a particular cross or breeding experiment
Image credits: quora
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