Smiley Face Genetics Smiley Face Genetics - Shelly'S Science Spot (Page 2 of 3) in pdf

Smiley Face Genetics Smiley Face Genetics - Shelly'S Science Spot Page 2

5. Does the predicted probability for a green face (question 3) match the actual results (question

4)? Explain.

____________________________________________________________________________

6. What is the probability that a smiley face will have an orange nose? ___ out of ___, or _____%

7. In the entire class, how many smiley faces have an orange nose?

___ out of ___, or _____%

8. Does the predicted probability for an orange nose (question 6) match the actual results (question

7)? Explain.

____________________________________________________________________________

Part B: Smiley Face Conclusion

9. Why did you only need to flip the male parent coin to determine the sex of your smiley face?

____________________________________________________________________________

10. How would the smiley face “children” change if one of the parents were homozygous dominant

for all the traits while the other was heterozygous?

____________________________________________________________________________

11. Grandma and Grandpa Smiley are heterozygous for the star eye shape. If one of their

heterozygous children married a girl with blast-type eyes, what percentage of their grandchildren

should have starry eyes? What percent would have blast-type eyes? Complete the punnett

square to help you find your answers.

_______ % starry eyes

_______ % blast-type eyes

Smiley Face Genetics Smiley Face Genetics - Shelly'S Science Spot Page 2