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Blood Typing (Jen Hinerman)

Author

Jen Hinerman
Kennedy High School (Granada Hills, CA)

Principle(s) Illustrated

  1. Genetics and Heredity
  2. Dominant/Recessive and Codominance
  3. Blood Types

Standards

  • 2e:Students know why approximately half of an individual’s DNA sequence comes from each parent.
  • 2g: Students know how to predict possible combinations of alleles in a zygote from the genetic makeup of the parents.
  • 3a: Students know how to predict the probable outcome of phenotypes in a genetic cross from the genotypes of the parents and mode of inheritance (autosomal or X-linked, dominant or recessive).
  • 4c: Students know how to predict the probable outcome of phenotypes in a genetic cross from the genotypes of the parents and mode of inheritance (autosomal or X-linked, dominant or recessive).

 Coagulation Method

Materials Needed for 6 Kits :

2 cups milk 6 boxes of toothpicks
2 bottles of food coloring – red and green Vinegar
18 small dropper bottles 2 cups water (+ additional water for the serum bottles)
18 small cups (Dixie cup size) 6 small plastic storage containers
6 permanent markers Labels for bottles and containers

 

Procedure:

1 – Mix 2 cups of milk with 2 cups of water. Add enough red food coloring to get a bright red color and then add a few drop of green to make it a deeper red color so that it looks more like real blood.

2 – Label six dropper bottles to correspond to the three suspects, the victim, the crime scene sample, and the sample from the weapon. You will also want to label each of the six storage containers to correspond to the bottles of fake blood. Fill each bottle with the fake blood mixture. Save the extra “blood” in case a group’s sample gets spilled!

3 – Label six dropper bottles with “Anti-A Serum” labels, label six with “Anti-B Serum” labels, and label another six with “Anti-Rh” labels. Use the information in the chart below to fill the bottles with either vinegar or water. You may want to code the bottles in a way that you can tell the contents easily, but won’t be obvious to the students.

Kit                 Anti A         Anti B         Anti-Rh         Blood Type

Suspect #1 Vinegar         Water         Vinegar         A+

Suspect #2 Water             Vinegar     Water             B

Suspect#3 Vinegar           Vinegar     Water             AB

Victim         Water              Water        Vinegar         O+

Crime Scene Vinegar       Water         Vinegar         A+

Weapon     Water                 Water       Vinegar         O+

4 – Create the testing kits by placing the correct bottle of fake blood in each kit along with the correct serums, a permanent marker, 3 small cups, and a box of toothpicks in a small plastic storage container.

Student Worksheet 

 

 Colored Water Method

Materials:

5 clear cups
water
blue food coloring
red food coloring
 
 

References

 

blood typing notes

 

Blood Typing Game

ĉ
Jennifer Hinerman,
Dec 14, 2011, 5:00 PM
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