Question

Your friend says that since an mRNA in eukaryotes can be translated in different reading frames to give different proteins in different cell types, operons exist in eukaryotes. Do you agree or disagree?

Answer 1

Operons do not exist in eukaryotes. Eukaryotic genes are typically monocistronic, while operons are specific to prokaryotes. Eukaryotic genes are transcribed by different RNA polymerases and undergo processing before becoming mRNA molecules.

Step-by-step explanation:

Operons do not exist in eukaryotes. While it is true that in eukaryotes, an mRNA can be translated in different reading frames to produce different proteins, this does not mean that operons exist. Operons are specific to prokaryotes, not eukaryotes.

Operons are functional units of DNA in prokaryotes that consist of multiple genes under the control of a single promoter. The genes within an operon are transcribed together into a single mRNA molecule and then translated into polypeptides. This allows for the coordinated expression of genes in response to environmental conditions.

In contrast, eukaryotic genes are typically monocistronic, meaning that each mRNA molecule codes for a single polypeptide. Eukaryotic genes are transcribed by different RNA polymerases and undergo extensive processing before becoming mature and functional mRNAs.