You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Next you isolate a mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

 

Describe the proposal for the type of regulatory functions affected by the MelB– mutation.

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#Question id: 4719

#SCPH12 I Genetics

When a trait exhibits complete co-dominance rather than complete dominance, a cross between heterozygote results deviation of following;

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#Question id: 18646

#SCPH01 Biochemistry

Which of the following technique can be used to determine the separation of proteins according to size, and relative molecular mass of proteins.

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#Question id: 14289

#SCPH05 I Biotechnology

In a fermenter the impeller diameter is increased from 0.5m to 1m and the rpm is increased from 100 rpm to 400 rpm. Reynolds number will increase by?

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#Question id: 19848

#SCPH05 I Biotechnology

The process, in which no heat enters or leaves the system, is termed as

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#Question id: 4135

#SCPH06 I Botany

In the “activation” of an amino acid for protein synthesis: