~~16.Once the Punnett square for Question 15 is complete, calculate the ratio of corn kernel varieties (recall that if the dominant trait is present, it will be expressed).
~~15.Recall from the background information that purple kernels are dominant and yellow kernels are recessive. Also recall that smooth kernels are dominant and wrinkled kernels are recessive. The third corn ear was the result of crossing a male ear of corn with the following gametes: PpSs, with a female ear of corn with the same gametes: PpSs. This is represented by the Punnett square, below. Complete the Punnett square by writing the correct letters that correspond to each number indicated in the table (for example, PPSS or ppss). (8 points)
~~14.Once the Punnett square for Question 13 is complete, calculate the ratio of purple and yellow kernels (recall that if the dominant trait is present, it will be expressed).
~~13.Recall from the background information that purple kernels are dominant and yellow kernels are recessive. The second ear of corn was the result of crossing two heterozygous ears of corn male purple (Pp x Pp). This is represented by the Punnett square below. Complete the Punnett Square by writing the correct letters that correspond to each number indicated in the table. (4 points)
c.What was the tallied frequency (phenotypic ratio) of purple and smooth, purple and wrinkled, yellow and smooth, or yellow and wrinkled kernels from Step 3? Which of the possible Mendelian ratios is best represented by this corn cob? (Remember there were four possible types for this part of the lab.) (2 points)
~~12.Refer to the data on the corn kernel color ratio from Part II of the lab.
a.What was the tallied frequency (phenotypic ratio) of purple to yellow kernels from Step 1? Which of the possible Mendelian ratios is best represented by this corn cob? (2 points)
~~11.Compare the real-world ratios calculated in Exercises 5 and 6 (coin toss activity) to Mendel's ratios. Were they close? Pose a possible explanation for why the ratios may not be exactly the same. (4 points)
~~10.What is the probability of a cross resulting in purple offspring when two heterozygous purple pea plants (e.g. Pp x Pp) are bred? What is/are the genotype(s) for purple offspring resulting from this cross? (4 points)
~~9.A horticulturist runs a test cross with an offspring (F1 generation) purple plant from Question 8. The phenotypic frequencies of the resulting offspring are 50% white and 50% purple. What is the true genotype of this offspring (F1 generation) purple plant? (2 points)