Question

in eukaryotic organisms, how are genes typically regulated? they are controlled by transcriptional and translational control they are controlled by the operon. they are controlled by the lac repressor gene.

Explanation:

In eukaryotic organisms, gene regulation occurs at multiple levels. Transcriptional control involves factors like transcription factors binding to DNA to regulate mRNA synthesis. Translational control affects protein production from mRNA. Operons (as in option 2) are mainly a prokaryotic (like bacterial) gene - regulation mechanism. The lac repressor gene (option 3) is specific to the lac operon in bacteria.

Answer:

They are controlled by transcriptional and translational control.