Bacterial strain A (met+, his-, arg+) is mixed with bacterial strain B (met-, his+, arg-), grown...

Bacterial strain A (met+, his-, arg+) is mixed with bacterial strain B (met-, his+, arg-), grown in complete media, then plated on minimal media. The colonies that grow on the plate indicate that ________.

Group of answer choices

the wild-type met gene has been transferred from A to B

the wild-type met and arg genes have been transferred from A to B

the wild-type his gene has been transferred from B to A

the wild-type arg gene has been transferred from A to B

genes have been transferred between A and B, but no further conclusions can be made

Expert Solution

Answer- the wild-type met and arg genes have been transferred from A to B.

According to Lederberg and Tatum of genetic recombination theory,the mixing of Bacterial strain A (met+, his-, arg+) with bacterial strain B (met-, his+, arg-) ,exchange the genetic material in complete media.When mixture plated on the minimal media (having less nutrients), the recombinant cells (met+,his+,arg+)were able to synthesize the constituents for metabolism. The Bacterial strain A (met+, his-, arg+) and bacterial strain B (met-, his+, arg-)separately can't grow as they can't synthesize the constituents for metabolism.

gladiator answered 1 year ago

An Hfr strain that is met + pro + bio + his + was mated with an F- strain that was met - pro - bio - his -.

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A Hfr strain possessing the markers His+ Met+ Tyr+ Strs was mated with a F– strain...

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For the peptide below Thr, Ser, Tyr, Met, Asp, Phe, His, Lys, Trp, Gly, Pro, Arg,...

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a) Draw the complete covalent structure of the tripeptide Met-Tyr-Arg, with trans peptide bonds, as it...

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