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Biology Pedigree Chart Worksheet - Chapter 14, Mrs. Heier'S Family Pedigree For Hair Type

Pedigree Charts

Biology: Chapter 14

Name ______________________________Period______

Directions: Study the pedigree charts and answer the questions.

Mrs. Heier’s Family Pedigree for Hair Type

(Mrs. Heier in the middle of the chart.)

HH=curly hair Hh=wavy hair

hh=straight hair

1._____

2._____

3._____

4._____

5._____

6._____

7._____

8._____

9._____ 10._____

11._____

12._____ 13._____

14._____

15._____

16._____

17._____ 18._____

19._____ 20._____

21._____ 22._____

23._____

24._____ 25._____

12._____ 13._____

14._____ 15._____ 16._____

1. Record the genotypes for each of my family members on the pedigree chart.

6. How many nieces do I have with straight hair?

7. When I was born, what percent chance did I have of inheriting straight

2. How many sisters do I have (do not include sister-in-laws)?

hair? (hint: draw a Punnet square)

3. How many brothers do I have (do not include brother-in-laws)?

8. What relationship is number #1 to me?

1. If my husband and I have another child, what percent

4. What is my father’s phenotype?

9. Identify my children on the pedigree chart (what numbers)?

5. How many nephews do I have with wavy hair?

10. What does incomplete dominance mean?

Biology Pedigree Chart Worksheet - Chapter 14, Mrs. Heier'S Family Pedigree For Hair Type