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Genetics and Genomics

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Selecting a Media for a Mutant Bacteria

GENES-KNKAH0

You are working with a bacteria that is gal- and thr-. A gal- mutant means that the bacteria cannot use the sugar galactose for energy. A thr- mutant means that the bacteria cannot synthesize the amino acid threonine on its own and must take it up from the environment.

On which of the following medias would the bacteria grow?

Select ALL that apply.​

If no nutrients are given, assume the media is minimal and does not contain any amino acids.

A

A medium using glucose as its sugar.

B

A medium using galactose as its sugar.

C

A medium using glucose as its sugar and supplemented​ with threonine.

D

A medium using galactose as its sugar and supplemented with threonine.

E

A medium using lactose as its sugar and supplemented with threonine.

F

A medium using galactose as its sugar and supplemented with tryptophan.

G

A medium using lactose as its sugar.

H

A medium using glucose and galactose as its sugar and supplemented with threonine.