Problem:

Question: Consider a model genetic plant in which seed color and stem shape are controlled by two genes, each of which has two alleles. Red seed color (W) is dominant to white (w), and straight stems (B) is dominant to branched (b).
a) Diagram a cross between true-breeding red/straight plants with true-breeding white/branched plants, showing the genotypes and phenotypes of both parents and the F1 offspring.
b) If the F1 offspring are testcrossed, give the genotypes and phenotypes of all possible offspring and the expected proportion of each (assuming no linkage).
c) If you observe the following results from the offspring from the testcross mentioned above, is it correct to conclude that the genes are linked? If so, calculate the map distance between them. Offspring: red/straight = 29, red/branched = 155, white/straight = 133, white/branched = 43

Please show your all work.