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#Question id: 15657
#SCPH06 I Botany
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?
TLS Online TPP Program
#Question id: 12753
#SCPH06 I Botany
Property of CTAB to precipitate plant DNA is because of presence of --------- in the DNA?
TLS Online TPP Program
#Question id: 14803
#SCPH01 Biochemistry
The percentage SIMILARITIES and IDENTITIES, respectively, between the two peptide sequences given below will be ______% and _____%.
Peptide I :
Ala-Ala-Arg-Arg-Gln-Trp-Leu-Thr-Phe-Thr-Lys-Ile-Met-Ser-Glu
Peptide II:
Ala-Ala-Arg-Glu-Gln-Tyr-Ile-Ser-Phe-Thr-Lys-Ile-Met-Arg-Asp
TLS Online TPP Program
#Question id: 303
#SCPH01 Biochemistry
Which condition favors the bond formation______
TLS Online TPP Program
#Question id: 2330
#SCPH06 I Botany
The cell theory states that