Please please help, i dont understand at all! <\3 1.) a. In Mendel’s cross for stem height, what contrasting traits did the pea plants in the P generation exhibit?

b. What trait or traits did the plants in the F1 generation exhibit? When you think of the traits of the parent plants, why is this result surprising?

c. Contrast the offspring in the F1 generation to the offspring in the F2 generation. What did the differences in the F1 and F2 offspring show Mendel?

2.) a. What is a dominant allele? What is a recessive allele?

b. Explain how dominant and recessive alleles for the trait of stem height determine whether a pea plant will be short or tall.

c. Can a short pea plant ever be a hybrid for the trait of steam height? Why or why not? As part of your explanation, write the letters that represent the alleles for stem height of a short pea plant.

3.) a. What is probability?

b. If you know the parents’ alleles for a trait, how can you use a Punnett square to predict the probable genotypes of the offspring?

c. A pea plant with round seeds has the genotype Rr. You cross this plant with a wrinkled-seed plant, genotype rr. What is the probability that the offspring will have wrinkled seeds?

3.) a. What is codominance? Give an example of codominant alleles and explain why they are codominant.

b. What is the phenotype of chicken with the genotype Fb Fw ?