Question 9

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Correct

1. lactose is absent

2. good repressor is produced by both I genes

3. in absence of lactose no repressor-lactose complex

4a. repressor will bind to bottom operator

4b. repressor will not bind to the mutant top operator

5a. transcription will occur in the top chromosome

5b. transcription will not occur on the bottom chromosome

6. beta galactosidase will be produced