BREEDING CORN PLANTS - PART 1

3:1

Pp

Pp

2. Based on the results Table 1, what is the phenotype ratio of Corn B? _______

Recall from Mendel’s work that he got a 3:1 ratio after breeding his F1 generations with each other.

3. To get a 3:1 ratio, we need parents that are ____X ____

A. Use those genotypes to complete the Punnett square

B-C. What are the genotype and phenotype ratios?

G=____ : ____ : ____ P= __________ : ___________

From Table 1, how many total kernels were in Corn B? ______

6. We need to use math to calculate the predicted results

7. The total number of offspring is 228. If 75% (3/4) is purple, than we should multiply 228 X _____ (75%) = _____

8. Use the same formula to calculate the yellow kernels

1 PP

2 Pp

1 pp

3 Purple

1 Yellow

228

.75

171