You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

Which mutations do you know to be in the same gene?

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#Question id: 28228

#Unit 5. Developmental Biology

When a multipotent stem cell divides asymmetrically, its maturing daughter cell often goes through a transition stage, called as

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#Question id: 19370

#Unit 12. Applied Biology

Genes are transferred from prokaryotes into plants with the objective

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#Question id: 700

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements is false?

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#Question id: 3717

#Unit 3. Fundamental Processes

E. coli DNA polymerase catalyzes polymerization in the ________ direction(s)

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#Question id: 2284

#Unit 2. Cellular Organization

Because they have chloroplasts for energy production, plant cells