6) Based on the following analysis of 2 recessive null mutations altering barley GA response (dwf1 and sin) Genotype see

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6 Based On The Following Analysis Of 2 Recessive Null Mutations Altering Barley Ga Response Dwf1 And Sin Genotype See 1 (35.42 KiB) Viewed 253 times

6) Based on the following analysis of 2 recessive null mutations altering barley GA response (dwf1 and sin) Genotype seedling height(cm) a-amylase activity in 3d seedlings (% of wt) wild type 8 100 dwf1 4 5 sin 12 150 dwf1 sln 4 a) Identify the epistatic mutation and draw your prediction for the likely pathway of wild type gene action regulating GA-induced stem elongation and a-amylase synthesis. b) Predict the a-amylase data for the double mutants based on your answers in (a). c) Does wild-type DWF1 promote or inhibit GA response? d) Might either of these loci (DWF1 or SLN) encode a DELLA class protein? Why/why not? e) which of these mutants would you expect to have the highest levels of PIF3-regulated gene expression when grown in the dark? (10 pts total)