Question

A diploid strain of yeast that was trisomic for a chromosome carrying the Trp1 gene was sporulated. When the asci were dissected and tested for the ability to grow without tryptophan, some asci had 4 prototrophic spores and some asci had 2 prototrophic spores and 2 auxotrophic spores. What was the genotype of the diploid trisomic parental strain with respect to the Trp1 gene?

Answer 1

Answer: Prototrophs are strains that have the same dietary requirements as their parents. Auxotrophs are mutants that require more nutrients in their media to develope.

Explanation :Prototrophs are strains that have the same dietary requirements as their parents. Auxotrophs are mutants that require more nutrients in their media to develope.