1. Punnett Squares Practice
On a separate sheet of paper

2. Example 1 A A A a

3. Example 1 Answer A A AA A AA a Aa Aa

4. Example 2 T t T t

5. Example 2 Answer T t TT T Tt t Tt tt

6. Example 3 C c c c

7. Example 3 Answer C c Cc c cc c Cc cc

8. Example 1 Probabilities
What is the probability that the offspring will have brown hair?
What is the probability that the offspring will have blonde hair? A A AA A AA
Key
A represents brown hair
a represents blonde hair a Aa Aa

9. Example 2 Probabilities
What is the probability that the offspring will have a straight tail?
What is the probability that the offspring will have a curly tail? T t TT T Tt
Key
T represents dogs having straight tails
t represents dogs having curly tails t Tt tt

10. Example 3 Probabilities
What is the probability that the offspring will have a cleft chin?
What is the probability that the offspring will not have a cleft chin? C c Cc c cc
Key
C represents no cleft chin
c represents cleft chin c Cc cc