Which of the following is required as inducer(s) for the expression of Lac operon?
Lactose
Lactose and Galactose
Glucose
Galactose
How many of the given statements $(i-iv)$ is/are correct?
$i.$ In transcription, adenosine pairs with uracil.
$ii.$ Regulation of lac operon by repressor is referred to as positive regulation.
$iii.$ The human genome has approximately $50,000\; genes.$
$iv. $ Haemophilia is a sex-linked recessive disease.
Wild type E.coli cells are growing in normal medium with glucose. They are transferred to a medium containing only lactose as the sugar. Which one of the following changes take place
$A$ : Lac operon exerts negative control only.
$R$ : The operator is occupied by aporepressor during regulation
In lac operon, $z$ gene codes for:
Definitions/Explanation : Splicing & Operator gene