In yeast, one haploid strain is unable to synthesize uracil but able to synthesize leucine, while another haploid strain is able to synthesize uracil but not leucine. You think that the ability to synthesize uracil and leucine has a genetic basis. Your goal is to determine the genotypes of the two nutritional phenotypes.

Provide symbols to represent the genes and alleles you predict determine the variation observed.

Predict the genotypes of the two nutritional phenotypes.

Briefly describe a procedure you could use to determine the genotypes from phenotypic data.  Your procedure must include at least one genetic cross and one sporulation.

What outcomes (observations) from the procedure you described would support the prediction you made in b?

Note: Feel free to use a table or figure to support your answer to c or d.