The significance of this 'Blood Type Lab,' is that blood isn't just about it's function but also how it has important DNA information encoded inside of the individual. Students are given the chance to notice the reaction of the blood when it's in contact with a different antigen, and how human blood is used to solve a crime and figure out the perpetrator. From the following activity, I learned about the factors and how the coagulation of blood occurs. For instance, a person who has type A blood, will have an antigen A on blood cells surface. If type B blood was donated to this person, since knowing he has type A, there would be a transfusion reaction. The result is that it would cause the blood to clump and also get more thick. This lab shows that by adding antigens to a suspect's blood, students can figure out the suspect's blood and match it to the blood at the crime area. Students are able to understand more about multiple alleles, and also to prevent blood coagulation.