Use the following information for questions 5-8: Suppose that the \"Green\" phen
ID: 3164358 • Letter: U
Question
Use the following information for questions 5-8: Suppose that the "Green" phenotype is controlled by two genes, A and B, as shown in the diagram below. Allele A produces enough enzyme 1 to convert "White" to "Red." Allele a produces no enzyme 1 Allele B produces enough enzyme 2 to convert "Red" to "Green." Allele b produces no enzyme 2. The A and Bgenes are both autosomal and assort independently White Enzyme 1 Red Enzyme 2 (Ipt] 5. This pathway provides an example gfaspecial type of gene interaction known as: (1pt) 6. What wil be the genotype(s) and phenotype(s) of the F1 offspring of a true-breeding "Green" male crossed with a true-breeding "White" female (aabb)? Genotype: Phenotype: 7. As we know, the expected phenotypic ratio of the Fz generation for a simple dihybrid cross is 9:3:3:1. Listed below are the possible genotypes that can lead to the different phenotypes observed in a simple dihybrid cross. For each genotype, indicate the phenotype as it applies to the diagram above and the probability that we would obtain each genotype by crossing the Fi generation. (Note that a ""in this case indicates the second allele can be either dominant or recessive A-B- A-bb aaB aabb (1pt) Phenotype: (1pt)Probability (1pt) 8. What is the expected phenotypic ratio for the problem above? as You do not need to fill in this anats square! (1pt) 9,/Properly set up the dihybrid punnett square to the left by filling in the correct GAMETE possibilities in a cross between the Fi generation & AaBb x AaBb. Page 2 of 2Explanation / Answer
Answer 5 it is the example of Recessive Epistasis
Answer 6 genotype of the F1 progeny is only AaBb and phenotype is only green Phenotype.
Answer 7
Answer 8 Expected phenotypic ratio is 9 [green] :3 [red] :4 [white]
Answer 9. Punnete square
A-B- A-bb aaB- aabb Phenotype Green [9] red [3] white[3] white [1] Probability 9/16 3/16 3/16 1/16