Observations and Questions

[11] Complete the Punnett square below when the parents are Bb and Bb.

Punnett Square	Male
Female	Alleles/Genes
B
b

[12] [a] Using your Punnett Square, calculate the expected percentage of blue-rimmed baby bugs and yellow-rimmed baby bugs. Show your work.

Answer [a] (0.5 points):

BB percentage = 100% x (number of times BB occurs in the Punnett Square)/4 = _______ %

Bb percentage = 100% x (number of times Bb occurs in the Punnett Square)/4 = _______ %

bb percentage = 100% x (number of times bb occurs in the Punnett Square)/4 = _______ %

Therefore,

blue-rimmed percentage = ______ %

yellow-rimmed percentage = ______ %

[b] How do your percentage table results compare with the Punnett Square calculations observed from your Procedure I Part C data run (higher, lower, similar)? Explain your answer.

Answer [b] (0.5 points):

[13] How do the genotype counts confirm the observed phenotype counts in Procedure I Part C (Bb x Bb parents). Be specific. Use the results from your Punnett Square as part of your discussion.

Answer (1 point):