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Biology Blood Types And Heredity

Biology

Standard IV, Objective 2

Title: Blood Types and Heredity

Description: In this lab investigation students will see if they can discover the

pattern of genetic transfer for blood type

Materials: red food color, green food color, water, 4 test tubes, test tube rack,

graduated cylinder, beaker, medicine dropper or pipette ,student sheet (printed

below)

Time Needed: 40-60 minutes

Procedures:

1. Mix solutions of red and green water, enough for 20 ml per student group of

each.

2. Read the introduction with students.

3. Have students make a prediction .

4. Allow students to perform the lab experiment.

5. Have groups combine their results on the board and come to a class

conclusion concerning which types can or cannot mix.

6. Give students time to solve the pedigree on their worksheet . Check for

accuracy.

7. Allow time for students to finish the questions and conclusions.

Scoring Guide:

1. Students follow procedures and record data………………..4

2. Students correctly predict which transfusions are safe……4

If you have blood type:

You can donate to:

You can receive from:

A, AB

O, A

B, AB

O, B

O, A, B

A, B, AB, O

Answers to questions:

1. A and B are dominant to O. O is recessive. A and B are codominant

AB x AO

OO x BO

A_ A_ AO

BO OO OO

OO AB

4. a. AB, BO b. AO BO c. OO, AO

5. The blood clumps and the person may die.

Biology Blood Types And Heredity