Using Resources Available to You Answer the Following

Name ______Section ______

Post-Lab Questions – Mendelian Genetics

Using resources available to you answer the following:

1. Describe the results of your monohybrid cross analysis. Were your deviations significant or insignificant? Explain.

2. What was the chi-square value for your monohybrid cross? ______

3. What was the level of probability for your monohybrid cross results? ______

4. Describe the results of your dihybrid cross analysis. Were your deviations significant or insignificant? Explain.

5. What was the chi-square value for your dihybrid cross? ______

6. What was the level of probability for your dihybrid cross results? ______

7. What is the importance of the chi-square test of fitness for analyzing data?

8. If you flipped the penny 10,000 times and recorded the number of heads and tails, would the deviation increase or decrease? Explain.

9. Suppose you counted 243 purple kernels and 96 yellow kernels from an ear of corn. According to a chi-square test of fitness do your results support the hypothesis is a monohybrid cross with dominance? Use evidence to support your answer.

10. In Lab Activity #2 you analyzed an experimental "monohybrid" cross with dominance. Assuming that it was a monohybrid cross, show how the color trait of the kernels was inherited from the P generation through the F1, and F2 generations. Use P = purple and p = yellow to represent the alleles for the trait.

11. In Lab Activity #3 you analyzed an experimental "dihybrid" cross with dominance. Assuming that it was a dihybrid cross, show how the color trait of the kernels was inherited from the P generation through the F1, and F2 generations. Use P = purple, p = yellow, S = smooth, and s = wrinkled to represent the alleles for the trait.