Which of the following combination of genes are floral meristem identity?

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#Question id: 546

#I Life Science/ Life Sciences Group – I-V

Enzymes are potent catalysts because they:

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#Question id: 3011

#I Life Science/ Life Sciences Group – I-V

Bacteria that may form endospores include

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#Question id: 18219

#SCPH05 I Biotechnology

Pseudoknot loop refers to 

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#Question id: 15657

#SCPH01 Biochemistry

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.

You next construct a MelA– MelB– double mutant, which gives the following behavior:

 

Which of your two models is consistent with this new data?

a) the MelA- MelB- double mutant is identical to the MelB- mutant

b) MelA- is epistatic to MelB-

c) MelB- is epistatic to MelA-

d) the MelA- MelB- double mutant is identical to the MelA- mutant

Which of the following is the correct prediction about the double mutants?

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#Question id: 13070

#SCPH05 I Biotechnology

Antibodies raised against an antigen from one organism will react to a greater or lesser degree with similar antigens from a related organism, depending on how many surface epitopes they share. This has given rise to a systematic method of identification of microorganisms known as______?