“Regulation of lac operon is referred to be negatively regulated.” Justify giving a reason.
The lac operon is negatively regulated because: The repressor protein inhibits gene expression by binding to the operator region in the absence of lactose. Gene transcription is only initiated when lactose is available to inactivate the repressor.
Match the following:
List-1: List-2:
A Physical barrier I Lysozyme
B Physiological barriers II Interferons
C Cellular barriers III Monocytes
D Cytokine barriers IV Colostrum
V Mucus membrane
If a red eyed male Drosophila and white eyed female Drosophila are crossed, the eye color in their offspring is:
A school is organizing a debate competition with participants as speakers and judges. $ S = \{S_1, S_2, S_3, S_4\} $ where $ S = \{S_1, S_2, S_3, S_4\} $ represents the set of speakers. The judges are represented by the set: $ J = \{J_1, J_2, J_3\} $ where $ J = \{J_1, J_2, J_3\} $ represents the set of judges. Each speaker can be assigned only one judge. Let $ R $ be a relation from set $ S $ to $ J $ defined as: $ R = \{(x, y) : \text{speaker } x \text{ is judged by judge } y, x \in S, y \in J\} $.