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In a diploid unicellular eukaryotic organism osmotic mutants prevent cells from

ID: 40527 • Letter: I

Question

In a diploid unicellular eukaryotic organism osmotic mutants prevent cells from growing on media with high levels of salt. The results shown in the table were obtained by crossing the mutants indicated. A +in the table indicates wild type phenotype in the progeny, a - in the table indicates that the crossing produced a mutant organism.

b. Which mutants correspond to which complementation group?

Mutant strains

A11

A52

A70

A71

B135

flm-2

L0

L5

M1

S1

A11

-

A52

+

-

A70

+

+

-

A71

+

+

-

-

B135

-

+

+

+

-

flm-2

+

+

+

+

+

-

L0

-

+

+

+

-

+

-

L5

+

+

-

-

+

+

+

-

M1

+

-

+

+

+

+

+

+

-

S1

+

+

+

+

+

+

+

+

+

-

Mutant strains

A11

A52

A70

A71

B135

flm-2

L0

L5

M1

S1

A11

-

A52

+

-

A70

+

+

-

A71

+

+

-

-

B135

-

+

+

+

-

flm-2

+

+

+

+

+

-

L0

-

+

+

+

-

+

-

L5

+

+

-

-

+

+

+

-

M1

+

-

+

+

+

+

+

+

-

S1

+

+

+

+

+

+

+

+

+

-

Explanation / Answer

A 52, A70, A71, flm 2, L5, M1 and S1 corresponds to complementation group.