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What are operons ? Why are there more operons in Prokayotes rather than eukaryotes ? What...

What are operons ? Why are there more operons in Prokayotes rather than eukaryotes ? What are parts of the operon ?

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an operon is a group of genes that are physically linked and under the control of the same promoter. in an operon, the linked genes give rise to a single mRNA (polycistronic) and is translated to different gene products.

eukaryotes have many genes located on different chromosomes. most of the genes have its own specific promoter. prokaryotes have multiple genes on a single chromosome. hence, multiple genes of related function are organized into operons that are under control of a single promoter, which is energetically favorable as well.

operon contains a promoter (RNA polymerase binds), an operator (regulator or repressor binds) and structural genes (the products of these genes are required for its metabolism).

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