Question

In prokaryotes operons are switched on and off by regulating
(A) Replication process
h
(B) Transcription process
(C) Translation process
(D) A and C
А
B
C​

Answer 1

Answer:

Even though Operons exist only in Prokaryotes there are few Eukaryotes such as Nematode C, elegans. Also, polycistronic RNA is present ...

Explanation:

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Answer 2

The correct answer is option B.

In prokaryotes operons are switched on and off by regulating the transcription process.

• A set of genes required for a particular function are arranged together in blocks referred to as operons.

• The structural genes give rise to proteins or enzymes that take part in biochemical pathways.

• The expression of genes in operons are regulated by inducers, repressors and activators( regulatory molecules).

Inducers- activate or repress transcription

Repressor- repress transcription

Activators- enhance transcription

• The transcription of the structural genes takes place followed by their translation, thereby leading to the production of proteins or enzymes.

Example of an operon is lac operon.