Final answer:
An operon is a group of genes operated together in prokaryotes (true), but gene regulation in eukaryotes is actually more complex than in prokaryotes (false), making the correct answer c. T&F.
Step-by-step explanation:
In prokaryotes, an operon is indeed a group of genes that are operated together, which includes regulatory sequences like the promoter and operator. The most well-known example is the LAC operon, which is involved in the metabolism of lactose in bacteria. This operon can be regulated by both repression and induction based on the presence or absence of lactose.
Contrary to the statement given in the question, gene regulation in eukaryotes is significantly more complex than in prokaryotes. This is because eukaryotes must coordinate gene expression not only at the transcriptional level but also post-transcriptionally. This added level of complexity is due to the separation in time and space of transcription and translation in eukaryotic cells.
The correct answer to the question is c. T&F, as the first statement regarding operons is true and the second statement about the complexity of gene regulation in eukaryotes being less than in prokaryotes is false.