AP BIOLOGY

Detailed explanation-1: -A key advantage of grouping genes of related function into one transcription unit is that a single “on-off switch” can control the whole cluster of functionally related genes; in other words, these genes are coordinately controlled.

Detailed explanation-2: -A key advantage of grouping genes with related functions into one transcription unit is that a single on-off switch can control a cluster of functionally related genes. ○ In other words, these genes are under coordinate control.

Detailed explanation-3: -Each cell expresses, or turns on, only a fraction of its genes at any given time. The rest of the genes are repressed, or turned off. The process of turning genes on and off is known as gene regulation.

Detailed explanation-4: -What is the advantage to prokaryotes grouping related metabolic gene products into a single operon? With the prokaryotes being grouped together it can be extremely efficient and only one operator needs to be officiated to create this product.

Detailed explanation-5: -Operons (clusters of co-regulated genes with related functions) are a well-known feature of prokaryotic genomes. Archeal and bacterial genomes generally contain a small number of highly conserved operons and a much larger number of unique or rare ones [1].