Question

Will a bacterium with genotype I+P+O+Z+ make beta-galactosidase in the absence of inducer? Will it make...

Will a bacterium with genotype I+P+O+Z+ make beta-galactosidase in the absence of inducer? Will it make beta-galactoside in the presence of inducer?

a) No; No b) No; Yes c) Yes; No d) Yes, Yes

Will a bacterium with genotype I-P+O+Z+ make beta-galactosidase in the absence of inducer? Will it make beta-galactoside in the presence of inducer?

a) No; No b) No; Yes c) Yes; No d) Yes, Yes

Will a bacterium with genotype I+P+O-Z+ make beta-galactosidase in the absence of inducer? Will it make beta-galactoside in the presence of inducer?

a) No; No b) No; Yes c) Yes; No d) Yes, Yes

Will a bacterium with genotype I-P-O+Z+ make beta-galactosidase in the absence of inducer? Will it make beta-galactoside in the presence of inducer?

a) No; No b) No; Yes c) Yes; No d) Yes; Yes

Will a bacterium with genotype I-P+O-Z+ / I+P-O+Z+ make beta-galactosidase in the absence of inducer? Will it make beta-galactoside in the presence of inducer?

a) No; No b) No; Yes c) Yes; No d) Yes, Yes

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Homework Answers

Answer #1

Q1.Option B) no, yes is correct.

Since there is repressor gene positive.

Q2. Option D) yes, yes

Since there is no repressor gene beta-galactoside will always produce.

Q3. Option D) yes, yes.

Since there is no operator , the repressor cannot bind so beta-galactoside will always produce

Q4. Option A) no , no is correct.

Since there is no promotor gene RNA polymerase will not be able to bind and beta-galactoside will not form in either case.

Q5. For  I-P+O-Z+ option D) yes, yes. Because there is no operator and beta-galactosidase will always produce.

For I+P-O+Z+ option A) no, no. Because there is no promotor and RNA polymerase cannot bind. So, beta-galactosidase will not form.

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